AVRO-3852: Upgrade CI tests to Java 21 GA release (apache#2525)

* AVRO-3852: Upgrade CI tests to Java 21 GA release

* AVRO-3852: Fix maven archetype generation for multiple Java versions

* AVRO-3852: Test with JDK 22 EA distribution

* AVRO-3852: Fix maven archetype integration test

.github/workflows/test-lang-java.yml

@@ -43,7 +43,8 @@ jobs:
         - '8'
         - '11'
         - '17'
-        - '21-ea'
+        - '21'
+        - '22-ea'
     steps:
       - uses: actions/checkout@v4
 
@@ -76,7 +77,8 @@ jobs:
         - '8'
         - '11'
         - '17'
-        - '21-ea'
+        - '21'
+        - '22-ea'
     steps:
       - uses: actions/checkout@v4
 

lang/java/archetypes/avro-service-archetype/src/main/pom/pom.xml

@@ -37,8 +37,6 @@
     <maven.compiler.target>${maven.compiler.target}</maven.compiler.target>
     <project.build.sourceEncoding>${project.build.sourceEncoding}</project.build.sourceEncoding>
     <avro.version>${project.version}</avro.version>
-    <maven.compiler.source>${maven.compiler.source}</maven.compiler.source>
-    <maven.compiler.target>${maven.compiler.target}</maven.compiler.target>
     <jackson-bom.version>${jackson-bom.version}</jackson-bom.version>
     <junit5.version>${junit5.version}</junit5.version>
     <logback.version>1.2.3</logback.version>
@@ -143,8 +141,8 @@
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-compiler-plugin</artifactId>
         <configuration>
-          <maven.compiler.source>\${maven.compiler.source}</maven.compiler.source>
-          <maven.compiler.target>\${maven.compiler.target}</maven.compiler.target>
+          <source>\${maven.compiler.source}</source>
+          <target>\${maven.compiler.target}</target>
         </configuration>
       </plugin>
     </plugins>