Add pyupgrade pre-commit hook + modernize python code (#2611)

skyvern/forge/sdk/artifact/storage/local.py

@@ -38,7 +38,7 @@ class LocalStorage(BaseStorage):
         if not file_path.exists():
             return []
         try:
-            with open(file_path, "r") as f:
+            with open(file_path) as f:
                 return [line.strip() for line in f.readlines() if line.strip()]
         except Exception:
             return []