Build(deps): Bump actions/setup-java from 5 to 6

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

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

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/maven.yml

diff --git a/.github/workflows/maven.yml b/.github/workflows/maven.yml
index 5893b7f..de9ed26 100644
--- a/.github/workflows/maven.yml
+++ b/.github/workflows/maven.yml
@@ -40,7 +40,7 @@
           restore-keys: |
             ${{ runner.os }}-maven-
       - name: Set up JDK ${{ matrix.java }}
-        uses: actions/setup-java@v5
+        uses: actions/setup-java@v6
         with:
           distribution: adopt
           java-version: ${{ matrix.java }}