Update pyupgrade to --py37-plus (#7809)

Author: alexrudd2

.pre-commit-config.yaml

@@ -75,7 +75,7 @@ repos:
   rev: 'v3.15.0'
   hooks:
   - id: pyupgrade
-    args: ['--py36-plus']
+    args: ['--py37-plus']
 - repo: https://github.com/PyCQA/flake8
   rev: '6.1.0'
   hooks:

aiohttp/http_websocket.py

@@ -135,7 +135,7 @@ class WSHandshakeError(Exception):
 
 
 # Used by _websocket_mask_python
-@functools.lru_cache()
+@functools.lru_cache
 def _xor_table() -> List[bytes]:
     return [bytes(a ^ b for a in range(256)) for b in range(256)]