Set to Java 21

nbi/stub/ext/components/products/helloworld/nbproject/project.properties

@@ -33,8 +33,8 @@ javac.compilerargs=
 javac.deprecation=false
 javac.modulepath=
 javac.processormodulepath=
-javac.source=1.7
-javac.target=1.7
+javac.source=21
+javac.target=21
 javac.test.classpath=\
     ${javac.classpath}:\
     ${build.classes.dir}:\

nbi/stub/ext/components/products/jdk/nbproject/project.properties

@@ -33,8 +33,8 @@ javac.compilerargs=
 javac.deprecation=false
 javac.modulepath=
 javac.processormodulepath=
-javac.source=1.7
-javac.target=1.7
+javac.source=21
+javac.target=21
 javac.test.classpath=\
     ${javac.classpath}:\
     ${build.classes.dir}:\