add cosign as dependency

meta/main.yml

@@ -29,6 +29,8 @@ galaxy_info:
   galaxy_tags:
     - caddy
 
-dependencies: []
+dependencies:
-  # List your role dependencies here, one per line. Be sure to remove the '[]' above,
+  - role: role-cosign
-  # if you add dependencies to this list.
+    scm: git
+    version: master
+    src: https://git.dragse.it/ansible/role-cosign