GitHub: Change python 3.10.8 -

It seems that GitHub bumps the patch level number frequently.
(right now from 3.10.7 to 3.10.8)
Let's go with 3.10 instead of the more specific 3.10.7 to see
if this works more long term.

.github/workflows/buildcheck.yml

@@ -11,7 +11,7 @@ jobs:
       - name: Setup Python
         uses: actions/setup-python@v1
         with:
-          python-version: 3.10.6
+          python-version: 3.10.8
 
       - name: Install dependencies
         run: |