Merge pull request #728 from mybatis/renovate/actions-setup-java-4.x

Update actions/setup-java action to v4

Author: hazendaz

.github/workflows/site.yaml

@@ -12,7 +12,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - name: Set up JDK
-        uses: actions/setup-java@v3
+        uses: actions/setup-java@v4
         with:
           java-version: 21
           distribution: zulu