Fix mismatched flake8 version in pre-commit (#4145)

.pre-commit-config.yaml

@@ -11,7 +11,7 @@ repos:
           - --quiet
         files: ^((esphome|script|tests)/.+)?[^/]+\.py$
   - repo: https://github.com/PyCQA/flake8
-    rev: 5.0.4
+    rev: 6.0.0
     hooks:
       - id: flake8
         additional_dependencies: