fix(ssh): remove authorized_keys filename for 2.1.0

Co-authored-by: Copilot <copilot@github.com>

defaults/main.yml

@@ -19,8 +19,7 @@ unix_users:
         StrictHostKeyChecking: "no"
         UserKnownHostFile: /dev/null
       authorized_keys:
-      - filename: alice@alice-pc.pub
-        content: ssh-ed25519 AAAAC3NzaC... alice
+      - content: ssh-ed25519 AAAAC3NzaC... alice
         # command: "" # optional
       private_keys:
       - filename: alice@alice-pc.ed25519.key