Update java in workflows

Author: zulus

.github/workflows/basic.yml

@@ -33,7 +33,7 @@ defaults:
   run:
     shell: bash
 env:
-  JAVA_VERSION: 17
+  JAVA_VERSION: 21
 
 jobs:
   build:

.github/workflows/sonar.yml

@@ -25,7 +25,7 @@ defaults:
   run:
     shell: bash
 env:
-  JAVA_VERSION: 17
+  JAVA_VERSION: 21
 
 jobs:
   build:
@@ -91,4 +91,4 @@ jobs:
           --batch-mode --show-version --file pom.xml \
           ${{ github.event.inputs.additional_maven_args }} \
           -Pcoverage -Dsonar.login=$SONAR_TOKEN verify org.sonarsource.scanner.maven:sonar-maven-plugin:sonar
-          
+