Update main.yml for opensuse 15.5

roles/netbootxyz/defaults/main.yml

@@ -397,6 +397,8 @@ releases:
     mirror: http://download.opensuse.org
     name: OpenSUSE
     versions:
+    - code_name: '15.5'
+      name: openSUSE Leap 15.5
     - code_name: '15.4'
       name: openSUSE Leap 15.4
     - code_name: '15.3'