Merge pull request #543 from Kong/java

update the setup-java actiom step

Author: ryber

.github/workflows/maven.yml

@@ -16,9 +16,10 @@ jobs:
     steps:
       - uses: actions/checkout@v1
       - name: Set up JDK 1.11
-        uses: actions/setup-java@v1
+        uses: actions/setup-java@v4
         with:
-          java-version: 1.11
+          distribution: 'zulu'
+          java-version: '21'
       - name: Cache
         uses: actions/cache@v4
         with: