Use any python3 in pre-commit

Unpin Python 3.10 in pre-commit configuration and use any available
Python 3 version. This fixes issues when the Python version in the
environment is not 3.10.

.pre-commit-config.yaml

@@ -3,12 +3,12 @@ repos:
     rev: 23.1a1
     hooks:
       - id: black
-        language_version: python3.10
+        language_version: python3
   - repo: https://github.com/pycqa/flake8
     rev: 6.0.0
     hooks:
       - id: flake8
-        language_version: python3.10
+        language_version: python3
         additional_dependencies: [flake8-bugbear, flake8-builtins, flake8-mutable, flake8-rst-docstrings, flake8-docstrings]