External Version bump for nixos new version string "nixos-20.09Qnixos-21.05Qnixos-21.11Qnixos-22.05Qnixos-22.11Qnixos-23.05Qnixos-23.11Qnixos-unstable"

roles/netbootxyz/defaults/main.yml

@@ -336,6 +336,8 @@ releases:
       name: nixos-22.11
     - code_name: nixos-23.05
       name: nixos-23.05
+    - code_name: nixos-23.11
+      name: nixos-23.11
     - code_name: nixos-unstable
       name: nixos-unstable
   openEuler: