[Release] Update version to 8.18.5

[elastic-vault-github-plugin-prod]

Updates references to the new release 8.18.5.

Merge after the release 8.18.4.

[mergify]

This pull request is now in conflicts. Could you fix it? 🙏
To fixup this pull request, you can check out it locally. See documentation: https://help.github.com/articles/checking-out-pull-requests-locally/

git fetch upstream
git checkout -b update-version-next-8.18.5 upstream/update-version-next-8.18.5
git merge upstream/8.18
git push upstream update-version-next-8.18.5

[mergify]

This pull request is now in conflicts. Could you fix it? 🙏
To fixup this pull request, you can check out it locally. See documentation: https://help.github.com/articles/checking-out-pull-requests-locally/

git fetch upstream
git checkout -b update-version-next-8.18.5 upstream/update-version-next-8.18.5
git merge upstream/8.18
git push upstream update-version-next-8.18.5

[elastic-sonarqube]

Quality Gate passed

Issues
0 New issues
0 Fixed issues
0 Accepted issues

Measures
0 Security Hotspots
No data about Coverage
0.0% Duplication on New Code

See analysis details on SonarQube

[elasticmachine]

💛 Build succeeded, but was flaky

• Buildkite Build
• Commit: 14a52a1

Failed CI Steps

• Win2025:sudo:install-uninstall

History

• 💚 Build #24102 succeeded 94791b6
• 💚 Build #24033 succeeded d17f104
• 💔 Build #24027 failed a18b258
• 💔 Build #24004 failed 940f9b4

cc @elasticmachine

[pkoutsovasilis]

Draft PR that removes agent version pinning to be merged as soon as CI is green #9105 🙂