add type hint on param

deploy-agent/deployd/common/helper.py

@@ -47,7 +47,7 @@ def builds_available_locally(self, builds_dir, env_name) -> List:
             return builds
 
     @staticmethod
-    def get_build_name(filename) -> str:
+    def get_build_name(filename: str) -> str:
         """
         Extract build name from the file name
         In downloader.py, we have the following name convenion