[CI] Run pre-commit checks on all supported Python versions

.github/workflows/check.yml

@@ -8,13 +8,21 @@ on:
 
 jobs:
   pre-commit:
+    strategy:
+      fail-fast: false
+      matrix:
+        python:
+          - "3.8"   # oldest Python supported by PSF
+          - "3.9"
+          - "3.10"
+          - "3.11"  # newest stable Python
     runs-on: ubuntu-22.04
     steps:
       - name: Checkout repository
         uses: actions/checkout@v3
       - name: Set up Python
         uses: actions/setup-python@v4
         with:
-          python-version: "3.11"
+          python-version: ${{ matrix.python }}
       - name: Run pre-commit
         uses: pre-commit/action@v3.0.0