adapt to current main branch

Signed-off-by: Holger Friedrich <mail@holger-friedrich.de>

Author: holgerfriedrich

pom.xml

@@ -152,6 +152,7 @@
     <properties>
         <project.build.outputTimestamp>1695310533</project.build.outputTimestamp>
         <maven.compiler.target>21</maven.compiler.target>
+        <maven.compiler.release>21</maven.compiler.release>
 
         <scm.connection>scm:git:https://gitbox.apache.org/repos/asf/karaf.git</scm.connection>
         <scm.developerConnection>scm:git:https://gitbox.apache.org/repos/asf/karaf.git</scm.developerConnection>

specs/javaxml/pom.xml

@@ -33,6 +33,7 @@
 
     <properties>
         <javaVersion>8</javaVersion>
+        <maven.compiler.release>${javaVersion}</maven.compiler.release>
     </properties>
 
     <dependencyManagement>