build: updated maven-compiler release version (#39)

Signed-off-by: SimoneFiorani <simone.fiorani@abinsula.com>

Author: sfiorani

bundles/pom.xml

@@ -53,7 +53,8 @@
         <skip.artifact.signing>true</skip.artifact.signing>
         <keystore.type>JKS</keystore.type>
         <kura.target.definition.version>6.0.0-SNAPSHOT</kura.target.definition.version>
-
+        <maven.compiler.release>21</maven.compiler.release>
+        
         <gwt.version>2.12.1</gwt.version>
     </properties>
 
@@ -65,8 +66,7 @@
                     <artifactId>tycho-compiler-plugin</artifactId>
                     <version>${tycho-version}</version>
                     <configuration>
-                        <source>21</source>
-                        <target>21</target>
+                        <release>${maven.compiler.release}</release>
                         <showDeprecation>true</showDeprecation>
                         <showWarnings>true</showWarnings>
                         <requireJREPackageImports>true</requireJREPackageImports>