run check style with java:11

Author: rahul2393

.github/workflows/samples.yaml

@@ -8,7 +8,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: actions/setup-java@v1
         with:
-          java-version: 8
+          java-version: 11
       - name: Run checkstyle
         run: mvn -P lint --quiet --batch-mode checkstyle:check
         working-directory: samples/snippets