workflow python version number

Author: nstarman

.github/workflows/ci.yml

@@ -40,7 +40,7 @@ jobs:
     - uses: actions/checkout@v3
     - uses: actions/setup-python@v4
       with:
-        python-version: 3.x
+        python-version: 3.8
     - uses: pre-commit/[email protected]
     - uses: pre-commit-ci/[email protected]
       if: always()