Upgrade & clean precommit config (#1733)

* Update pre-commit config format

* Applies `pre-commit migrate-config`

* flake8 precommit hook is no longer part of pre-commit/pre-commit-hooks

* Update pre-commit hook repo versions

* No need for separate pre-commit repo to check line endings

.pre-commit-config.yaml

@@ -1,5 +1,6 @@
+repos:
 -   repo: https://github.com/pre-commit/pre-commit-hooks
-    sha: v0.9.1
+    rev: v4.3.0
     hooks:
     -   id: trailing-whitespace
     -   id: check-added-large-files
@@ -14,18 +15,20 @@
     -   id: check-yaml
     -   id: detect-private-key
     -   id: end-of-file-fixer
+    -   id: mixed-line-ending
+        args: [ '--fix=lf' ]
+        description: Forces to replace line ending by the UNIX 'lf' character.
     -   id: fix-encoding-pragma
-    -   id: flake8
     -   id: name-tests-test
         args:
         - --django
         exclude: ^tests/testapp|^tests/management/|^tests/collisions/|^tests/pythonrc.py|^tests/runner.py
--   repo: https://github.com/Lucas-C/pre-commit-hooks.git
-    sha: v1.0.1
+-   repo: https://github.com/pycqa/flake8
+    rev: 4.0.1
     hooks:
-    -   id: forbid-crlf
+    -   id: flake8
 -   repo: https://github.com/trbs/pre-commit-hooks-trbs.git
-    sha: e233916fb2b4b9019b4a3cc0497994c7926fe36b
+    rev: 1.2.4
     hooks:
     -   id: forbid-executables
         exclude: manage.py|setup.py