chore: Release v0.54.4

[MeltyBot]

Prepare MeltanoSDK v0.54.4 for release.

Checklist:

• Check that the right version is set in all the files.
• Groom the changelog for wording or missing entries.
• Merge this PR once everything looks good.

Release Draft

Summary by Sourcery

Release version 0.54.4 of the SDK and update references across the project.

Bug Fixes:

• Ensure emitted ACTIVATE_VERSION messages respect stream aliases configured via stream maps.

Build:

• Bump singer-sdk dependency to v0.54.4 in all cookiecutter templates and project metadata.

Documentation:

• Update changelog with v0.54.4 entry and adjust documentation config and templates to reference the new version.

[sourcery-ai]

Reviewer's guide (collapsed on small PRs)

Reviewer's Guide

Prepares the Meltano SDK v0.54.4 release by updating version references across project metadata, cookiecutter templates, documentation, and issue templates, and by adding a changelog entry describing a bug fix related to ACTIVATE_VERSION honoring stream aliases.

File-Level Changes

Change	Details	Files
Document the v0.54.4 release and its key bug fix in the changelog.	Add v0.54.4 section dated 2026-05-28 to the changelog Describe bug fix ensuring emitted ACTIVATE_VERSION honors stream aliases configured with stream maps	CHANGELOG.md
Align cookiecutter project templates to depend on singer-sdk v0.54.4.	Bump singer-sdk dependency from ~=0.54.3 to ~=0.54.4 in mapper template Bump singer-sdk dependency from ~=0.54.3 to ~=0.54.4 in tap template, including extras variant Bump singer-sdk dependency from ~=0.54.3 to ~=0.54.4 in target template, including faker extra variant	cookiecutter/mapper-template/{{cookiecutter.mapper_id}}/pyproject.toml cookiecutter/tap-template/{{cookiecutter.tap_id}}/pyproject.toml cookiecutter/target-template/{{cookiecutter.target_id}}/pyproject.toml
Update version metadata and documentation to 0.54.4.	Update Singer SDK version placeholder in bug report issue template to 0.54.4 Update Sphinx docs configuration release string to 0.54.4 Update Commitizen configuration version to 0.54.4 in pyproject.toml	.github/ISSUE_TEMPLATE/bug.yml docs/conf.py pyproject.toml

---

Tips and commands

Interacting with Sourcery

• Trigger a new review: Comment @sourcery-ai review on the pull request.
• Continue discussions: Reply directly to Sourcery's review comments.
• Generate a GitHub issue from a review comment: Ask Sourcery to create an
  issue from a review comment by replying to it. You can also reply to a
  review comment with @sourcery-ai issue to create an issue from it.
• Generate a pull request title: Write @sourcery-ai anywhere in the pull
  request title to generate a title at any time. You can also comment
  @sourcery-ai title on the pull request to (re-)generate the title at any time.
• Generate a pull request summary: Write @sourcery-ai summary anywhere in
  the pull request body to generate a PR summary at any time exactly where you
  want it. You can also comment @sourcery-ai summary on the pull request to
  (re-)generate the summary at any time.
• Generate reviewer's guide: Comment @sourcery-ai guide on the pull
  request to (re-)generate the reviewer's guide at any time.
• Resolve all Sourcery comments: Comment @sourcery-ai resolve on the
  pull request to resolve all Sourcery comments. Useful if you've already
  addressed all the comments and don't want to see them anymore.
• Dismiss all Sourcery reviews: Comment @sourcery-ai dismiss on the pull
  request to dismiss all existing Sourcery reviews. Especially useful if you
  want to start fresh with a new review - don't forget to comment
  @sourcery-ai review to trigger a new review!

Customizing Your Experience

Access your dashboard to:

• Enable or disable review features such as the Sourcery-generated pull request
  summary, the reviewer's guide, and others.
• Change the review language.
• Add, remove or edit custom review instructions.
• Adjust other review settings.

Getting Help

• Contact our support team for questions or feedback.
• Visit our documentation for detailed guides and information.
• Keep in touch with the Sourcery team by following us on X/Twitter, LinkedIn or GitHub.

[sourcery-ai]

Hey - I've found 1 issue

Prompt for AI Agents

Please address the comments from this code review:

## Individual Comments

### Comment 1
<location path="CHANGELOG.md" line_range="12" />
<code_context>
+
+### 🐛 Fixes
+
+- [#3654](https://github.com/meltano/sdk/issues/3654) Emitted `ACTIVATE_VERSION` now honor the stream aliases configured with stream maps
+
 ## v0.54.3 (2026-05-27)
</code_context>
<issue_to_address>
**issue (typo):** Fix subject-verb agreement in the new changelog entry.

Change the sentence to use correct subject-verb agreement, e.g.: "Emitted `ACTIVATE_VERSION` now honors the stream aliases configured with stream maps."

```suggestion
- [#3654](https://github.com/meltano/sdk/issues/3654) Emitted `ACTIVATE_VERSION` now honors the stream aliases configured with stream maps
```
</issue_to_address>

---

Sourcery is free for open source - if you like our reviews please consider sharing them ✨

• X
• Mastodon
• LinkedIn
• Facebook

_{Help me be more useful! Please click 👍 or 👎 on each comment and I'll use the feedback to improve your reviews.}

[read-the-docs-community]

Documentation build overview

📚 Meltano SDK | 🛠️ Build #32892776 | 📁 Comparing 9865930 against latest (aceb0e0)

  🔍 Preview build  

8 files changed · ± 8 modified

± Modified

• genindex.html
• classes/singer_sdk.GraphQLStream.html
• classes/singer_sdk.RESTStream.html
• classes/singer_sdk.Target.html
• classes/singer_sdk.sql.SQLConnector.html
• classes/singer_sdk.sql.SQLTarget.html
• classes/singer_sdk.sql.connector.JSONSchemaToSQL.html
• classes/singer_sdk.sql.connector.SQLToJSONSchema.html

[codspeed-hq]

Merging this PR will not alter performance

✅ 8 untouched benchmarks

---

_{Comparing release/v0.54.4 (9865930) with v0.54 (85f64b4)}

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 93.81%. Comparing base (85f64b4) to head (9865930).

Additional details and impacted files

@@           Coverage Diff           @@
##            v0.54    #3655   +/-   ##
=======================================
  Coverage   93.81%   93.81%           
=======================================
  Files          73       73           
  Lines        5951     5951           
  Branches      731      731           
=======================================
  Hits         5583     5583           
  Misses        273      273           
  Partials       95       95           

Flag	Coverage Δ
core	82.40% <ø> (ø)
end-to-end	75.19% <ø> (ø)
optional-components	42.73% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.