Bump actions/setup-python from 2 to 4 (#1055)

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/python-tests.yml

@@ -64,7 +64,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
-      - uses: actions/setup-python@v2
+      - uses: actions/setup-python@v4
       - uses: pre-commit/[email protected]
         with:
           extra_args: --all-files --hook-stage=manual