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

skyvern/utils/__init__.py

@@ -28,7 +28,7 @@ def detect_os() -> str:
     system = platform.system()
     if system == "Linux":
         try:
-            with open("/proc/version", "r") as f:
+            with open("/proc/version") as f:
                 version_info = f.read().lower()
                 if "microsoft" in version_info:
                     return "wsl"

skyvern/utils/files.py

@@ -25,5 +25,5 @@ def get_json_from_file(file_path: str) -> dict[str, str]:
     if not os.path.exists(file_path):
         return {}
 
-    with open(file_path, "r") as json_file:
+    with open(file_path) as json_file:
         return json.load(json_file)