feat(docker): update base images to Java 25, Spring 4, Jackson 3, Gradle 9 and optimize JVM options (Project Lilliput) (#5725)

Co-authored-by: Anthony Stirling <[email protected]>

.github/workflows/frontend-backend-licenses-update.yml

@@ -330,10 +330,10 @@ jobs:
           app-id: ${{ secrets.GH_APP_ID }}
           private-key: ${{ secrets.GH_APP_PRIVATE_KEY }}
 
-      - name: Set up JDK 21
+      - name: Set up JDK 25
         uses: actions/setup-java@be666c2fcd27ec809703dec50e508c2fdc7f6654 # v5.2.0
         with:
-          java-version: "21"
+          java-version: "25"
           distribution: "temurin"
 
       - name: Setup Gradle
@@ -344,7 +344,12 @@ jobs:
       - name: Check licenses and generate report
         id: license-check
         run: |
-          ./gradlew checkLicense generateLicenseReport || echo "LICENSE_CHECK_FAILED=true" >> $GITHUB_ENV
+          # NOTE: --no-parallel is intentional here. Running the license-checking tasks in parallel has
+          # previously caused intermittent concurrency issues in CI (e.g. flaky failures in the license
+          # plugin/Gradle when multiple projects are evaluated concurrently). Disabling parallelism trades
+          # some build speed for more reliable license reports. If the underlying issues are resolved in
+          # future Gradle or plugin versions, this flag can be reconsidered.
+          ./gradlew checkLicense generateLicenseReport --no-parallel || echo "LICENSE_CHECK_FAILED=true" >> $GITHUB_ENV
         env:
           MAVEN_USER: ${{ secrets.MAVEN_USER }}
           MAVEN_PASSWORD: ${{ secrets.MAVEN_PASSWORD }}