Fix k9s dependency update typo (#948)

* Add k9s to dependency update CI

* fixed typo

Author: CloudyBug

.github/workflows/update-dependencies.yml

@@ -166,7 +166,8 @@ jobs:
             version_jsonpath: k3s_version
 
           - key: k9s
-            path: ./roles/k9s/defaults/main.yaml
+            path: ./roles/k9s/defaults/main.yml
+
             repository: derailed/k9s
             version_jsonpath: k9s_version