Bump actions/setup-java from 4.9.1 to 6.0.0

Bumps [actions/setup-java](https://github.com/actions/setup-java) from 4.9.1 to 6.0.0.
- [Release notes](https://github.com/actions/setup-java/releases)
- [Commits](actions/setup-java@cf277c6...dd06d9c)

---
updated-dependencies:
- dependency-name: actions/setup-java
  dependency-version: 6.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

.github/workflows/ci.yml

@@ -29,7 +29,7 @@ jobs:
       # Everything the jars are built with. Gradle provisions no JDKs of its own —
       # auto-download is off in gradle.properties — so JDK21_HOME is the toolchain it reads.
       - name: Install JDK 21
-        uses: actions/setup-java@cf277c60eb25467037889841efdb72551f06f6c3 # v4.9.1
+        uses: actions/setup-java@dd06d9cba3e5552c54d9f8ea23572deb30010f7c # v6.0.0
         with:
           distribution: temurin
           java-version: '21'
@@ -97,7 +97,7 @@ jobs:
       # After GraalVM, so JAVA_HOME — and the Gradle daemon — is 21 like everywhere else, and
       # so the jars this job feeds into native-image are compiled at 21. GRAALVM_HOME survives.
       - name: Install JDK 21 for the jars
-        uses: actions/setup-java@cf277c60eb25467037889841efdb72551f06f6c3 # v4.9.1
+        uses: actions/setup-java@dd06d9cba3e5552c54d9f8ea23572deb30010f7c # v6.0.0
         with:
           distribution: temurin
           java-version: '21'

.github/workflows/codeql-analysis.yml

@@ -27,7 +27,7 @@ jobs:
       # are provisioned by gradle-jdks (gradle/jdks/**), because gradle.properties
       # disables installation auto-detection.
       - name: Set up a bootstrap JDK
-        uses: actions/setup-java@cf277c60eb25467037889841efdb72551f06f6c3 # v4.9.1
+        uses: actions/setup-java@dd06d9cba3e5552c54d9f8ea23572deb30010f7c # v6.0.0
         with:
           distribution: temurin
           java-version: '21'

.github/workflows/dependency-submission.yml

@@ -14,7 +14,7 @@ jobs:
       - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
 
       - name: Set up a bootstrap JDK
-        uses: actions/setup-java@cf277c60eb25467037889841efdb72551f06f6c3 # v4.9.1
+        uses: actions/setup-java@dd06d9cba3e5552c54d9f8ea23572deb30010f7c # v6.0.0
         with:
           distribution: temurin
           java-version: '21'