Remove duplicate Java setup conflicting with s4u/[email protected]

[Copilot]

The workflow broke after bumping s4u/setup-maven-action to v1.19.0 because it's a composite action that internally runs actions/setup-java, causing duplicate Java setup.

Changes:

• Removed manual actions/setup-java@v5 step
• Added java-distribution: microsoft parameter to s4u/setup-maven-action to preserve Microsoft OpenJDK

Before:

- name: Set up JDK 21
  uses: actions/setup-java@v5
  with:
    distribution: 'microsoft' 
    java-version: '21'
- name: Setup Maven Action
  uses: s4u/[email protected]
  with:
    java-version: 21
    maven-version: '3.9.6'

After:

- name: Setup Maven Action
  uses: s4u/[email protected]
  with:
    java-version: 21
    java-distribution: microsoft
    maven-version: '3.9.6'

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[Copilot]

Just as a heads up, I was blocked by some firewall rules while working on your feedback. Expand below for details.

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• https://api.github.com/repos/clemensv/avrotize/commits/b72af31/check-runs
  • Triggering command: /usr/bin/curl curl -s -H Authorization: Bearer REDACTED (http block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)