refactor: update remote tag fetching behaviour so it uses api instead of shallow clone

src/git_flow/remote/github.py

@@ -63,5 +63,8 @@ class GithubRemoteAPI(RemoteAPI):
             for c in reversed(items)
         ]
 
+    def list_tags(self, suffix: str = "") -> list[str]:
+        return [t["name"] for t in self.get_all_pages(self.get_endpoint("/tags"), 100)]
+
     def get_endpoint(self, resource: str) -> str:
         return f"{GithubRemoteAPI.API_ENDPOINT}/{self.repository}{resource}"