chore: Remove migrations exclusion from pre-commit config

.pre-commit-config.yaml

@@ -24,4 +24,3 @@ repos:
         name: pip-compile requirements_dev.in
         args: [requirements_dev.in, -o, requirements_dev.txt]
         files: ^requirements(_nongpl|_dev)?\.(in|txt)$
-exclude: /migrations/

pyproject.toml

@@ -32,6 +32,7 @@ builtins-ignorelist = ["copyright"]
 [tool.ruff.lint.per-file-ignores]
 "docs/conf.py" = ["INP001"]  # no __init__.py file
 "*/management/commands/*" = ["INP001"]  # no __init__.py file
+"*/migrations/*" = ["E501"]
 "tests/*" = [
   "D",  # docstring
   "PT",  # unittest