Merge pull request #15604 from apache/fix/wrapper-verify-jdk-21-on-8.0.x

fix(ci): bump verifyWrapper JDK to 21 on 8.0.x

Author: jamesfredley

.github/workflows/gradle.yml

@@ -506,7 +506,7 @@ jobs:
         uses: actions/setup-java@v4
         with:
           distribution: liberica
-          java-version: 17
+          java-version: 21
       - name: "📥 Download Wrapper"
         uses: actions/download-artifact@v7.0.0
         with: