Change project java version to 11

galaxy/pom.xml

@@ -5,8 +5,8 @@
     <modelVersion>4.0.0</modelVersion>
 
     <properties>
-        <maven.compiler.source>16</maven.compiler.source>
-        <maven.compiler.target>16</maven.compiler.target>
+        <maven.compiler.source>11</maven.compiler.source>
+        <maven.compiler.target>11</maven.compiler.target>
     </properties>
 
     <parent>