Update main.yml

openEuler 22.03 LTS released.
openEuler 21.09 end of life.

roles/netbootxyz/defaults/main.yml

@@ -334,8 +334,8 @@ releases:
     versions:
     - code_name: openEuler-20.03-LTS-SP3
       name: openEuler-20.03-LTS-SP3
-    - code_name: openEuler-21.09
-      name: openEuler-21.09
+    - code_name: openEuler-22.03-LTS
+      name: openEuler-22.03-LTS
   openbsd:
     base_dir: pub/OpenBSD
     enabled: true