[cleanup] Bump ruff to 0.13.x (#14293)

Authored by: bashonly

yt_dlp/utils/_utils.py

@@ -4770,7 +4770,7 @@ def jwt_encode(payload_data, key, *, alg='HS256', headers=None):
 
 # can be extended in future to verify the signature and parse header and return the algorithm used if it's not HS256
 def jwt_decode_hs256(jwt):
-    header_b64, payload_b64, signature_b64 = jwt.split('.')
+    _header_b64, payload_b64, _signature_b64 = jwt.split('.')
     # add trailing ='s that may have been stripped, superfluous ='s are ignored
     return json.loads(base64.urlsafe_b64decode(f'{payload_b64}==='))