Upgrade pre-commit hooks

Upgrade to version 3.4.0
Work around an issue with the shellcheck hook (see syntaqx/git-hooks#8)

.pre-commit-config.yaml

@@ -1,30 +1,30 @@
 default_language_version:
-  python: python3.7
+  python: python3.9
 
 repos:
 - repo: https://github.com/pre-commit/pre-commit-hooks
-  rev: v2.2.3
+  rev: v3.4.0
   hooks:
   -   id: check-merge-conflict
   -   id: debug-statements
   -   id: end-of-file-fixer
   -   id: trailing-whitespace
 - repo: https://github.com/pre-commit/mirrors-mypy
-  rev: v0.760
+  rev: v0.812
   hooks:
   - id: mypy
     args: ['--ignore-missing-imports']
     exclude: tests
 - repo: https://gitlab.com/pycqa/flake8
-  rev: 3.7.7
+  rev: 3.9.0
   hooks:
   - id: flake8
 - repo: https://github.com/pre-commit/mirrors-isort
   rev: v4.3.21
   hooks:
   - id: isort
 - repo: https://github.com/Lucas-C/pre-commit-hooks
-  rev: v1.1.6
+  rev: v1.1.9
   hooks:
   - id: forbid-crlf
   - id: remove-crlf

setup.cfg

@@ -101,7 +101,7 @@ zip_safe = true
 dev =
     coverage
     pdbpp
-    pre-commit
+    pre-commit<2.10.0
     pytest
     pytest-cov
     pytest-mock