fix #2789 bump up to java 21

.github/workflows/codeql-analysis.yml

@@ -70,10 +70,10 @@ jobs:
     #   make bootstrap
     #   make release
     - uses: actions/checkout@v2
-    - name: Set up JDK 17
+    - name: Set up JDK 21
       uses: actions/setup-java@v2
       with:
-        java-version: '17'
+        java-version: '21'
         distribution: 'temurin'
     - name: Cache Maven packages
       uses: actions/cache@v2

.github/workflows/maven.yml

@@ -20,10 +20,10 @@ jobs:
 
     steps:
     - uses: actions/checkout@v2
-    - name: Set up JDK 17
+    - name: Set up JDK 21
       uses: actions/setup-java@v2
       with:
-        java-version: '17'
+        java-version: '21'
         distribution: 'temurin'
     - uses: actions/cache@v1
       with: