Set Spring's maven.compiler.release to 21

Set maven.compiler.release in Spring example to 21.

Signed-off-by: Ivan Hrasko <[email protected]>

lighty-examples/lighty-controller-springboot-netconf/pom.xml

@@ -25,7 +25,7 @@
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
         <maven.deploy.skip>true</maven.deploy.skip>
-        <maven.compiler.release>17</maven.compiler.release>
+        <maven.compiler.release>21</maven.compiler.release>
     </properties>
 
     <dependencyManagement>