chore: update shared files

Automated update of shared files from the social-core repository, see
https://github.com/python-social-auth/.github/blob/main/repo-sync.py

Author: nijel

.github/workflows/pre-commit.yml

@@ -0,0 +1,9 @@
+name: pre-commit check
+
+on:
+  push:
+  pull_request:
+
+jobs:
+  pre-commit:
+    uses: python-social-auth/social-core/.github/workflows/pre-commit-shared.yml@master