Bump actions/setup-java from 5 to 6 (#776)

Bumps [actions/setup-java](https://github.com/actions/setup-java) from 5 to 6.
- [Release notes](https://github.com/actions/setup-java/releases)
- [Commits](actions/setup-java@v5...v6)

---
updated-dependencies:
- dependency-name: actions/setup-java
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/build.yml

@@ -18,7 +18,7 @@ jobs:
       uses: actions/checkout@v7
 
     - name: Set up JDK 25
-      uses: actions/setup-java@v5
+      uses: actions/setup-java@v6
       with:
         java-version: '25'
         distribution: 'corretto'