refactor: install ansible with Python venv (#863)

.taskfiles/ClusterTasks.yaml

@@ -20,7 +20,7 @@ tasks:
         msg: |
           Age key file is not found. Did you forget to create it?
     vars:
-      SOPS_AGE_KEY_FILE: ~/.config/sops/age/keys.txt
+      SOPS_AGE_KEY_FILE: "{{.ROOT_DIR}}/age.key"
 
   reconcile:
     desc: Force update Flux to pull in changes from your Git repository