Bump the github-dependencies group with 2 updates

Bumps the github-dependencies group with 2 updates: [actions/setup-java](https://github.com/actions/setup-java) and [actions/cache](https://github.com/actions/cache).


Updates `actions/setup-java` from 5.3.0 to 5.4.0
- [Release notes](https://github.com/actions/setup-java/releases)
- [Commits](actions/setup-java@v5.3.0...v5.4.0)

Updates `actions/cache` from 5 to 6
- [Release notes](https://github.com/actions/cache/releases)
- [Changelog](https://github.com/actions/cache/blob/main/RELEASES.md)
- [Commits](actions/cache@v5...v6)

---
updated-dependencies:
- dependency-name: actions/setup-java
  dependency-version: 5.4.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: github-dependencies
- dependency-name: actions/cache
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: github-dependencies
...

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

Author: dependabot[bot]

.github/workflows/main.yml

@@ -16,7 +16,7 @@ jobs:
         uses: actions/checkout@v7
 
       - name: Set up JDK ${{ matrix.java-version }}
-        uses: actions/setup-java@v5.3.0
+        uses: actions/setup-java@v5.4.0
         with:
           distribution: 'zulu'
           java-version: ${{ matrix.java-version }}
@@ -26,7 +26,7 @@ jobs:
           server-password: MAVEN_PASSWORD
 
       - name: Cache .m2
-        uses: actions/cache@v5
+        uses: actions/cache@v6
         with:
           path: ~/.m2/repository
           key: ${{ runner.os }}-maven-${{ hashFiles('**/pom.xml') }}