Update parent to commonjava 21

ligangty · ligangty · commit 5515538a1b91 · 2026-03-26T09:06:03.000+08:00
diff --git a/pom.xml b/pom.xml
@@ -22,7 +22,7 @@
   <parent>
     <groupId>org.commonjava</groupId>
     <artifactId>commonjava</artifactId>
-    <version>19</version>
+    <version>21</version>
   </parent>
 
   <groupId>org.commonjava.indy.service</groupId>
