Bump gradle/actions from 5 to 6 (#341)

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

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

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

Author: dependabot[bot]

.github/workflows/gradle-build.yml

@@ -66,7 +66,7 @@ jobs:
           java-version: '25'
           distribution: 'temurin'
       - name: Setup Gradle
-        uses: gradle/actions/setup-gradle@v5
+        uses: gradle/actions/setup-gradle@v6
         with:
           add-job-summary-as-pr-comment: on-failure
           build-scan-publish: true
@@ -98,7 +98,7 @@ jobs:
           distribution: 'temurin'
           java-version: 25
       - name: Generate and submit dependency graph
-        uses: gradle/actions/dependency-submission@v5
+        uses: gradle/actions/dependency-submission@v6
         with:
           build-scan-publish: true
           build-scan-terms-of-use-url: "https://gradle.com/terms-of-service"
@@ -119,7 +119,7 @@ jobs:
           java-version: '25'
           distribution: 'temurin'
       - name: Setup Gradle
-        uses: gradle/actions/setup-gradle@v5
+        uses: gradle/actions/setup-gradle@v6
         with:
           add-job-summary-as-pr-comment: on-failure
           build-scan-publish: true