Move GH actions to java 17

Java 11 left standard support 3 months ago, it's time to move forward
and align with the rest of the ecosystem

.github/workflows/gradle.yml

@@ -6,15 +6,15 @@ name: Java CI with Gradle
 on: [push, pull_request]
 
 jobs:
-  build-11:
+  build-17:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v3
     - uses: gradle/wrapper-validation-action@v1
-    - name: Set up JDK 11
+    - name: Set up JDK 17
       uses: actions/setup-java@v3
       with:
-        java-version: 11
+        java-version: 17
         distribution: 'temurin'
     - name: Grant execute permission for gradlew
       run: chmod +x gradlew