PROTON-2197: update to Apache parent pom 23
diff --git a/pom.xml b/pom.xml
index 129da3f..2ec2f1c 100644
--- a/pom.xml
+++ b/pom.xml
@@ -20,7 +20,7 @@
   <parent>
     <groupId>org.apache</groupId>
     <artifactId>apache</artifactId>
-    <version>21</version>
+    <version>23</version>
   </parent>
   <modelVersion>4.0.0</modelVersion>