Move back to ubuntu-22.04 as runner

Python 3.7 is not available on `ubuntu-latest`.

Author: maarten-ic

.github/workflows/test_with_pytest.yml

@@ -7,7 +7,7 @@ on:
 
 jobs:
   test:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     strategy:
       matrix:
         python-version: ["3.7", "3.8", "3.9", "3.10", "3.11", "3.12", "3.13"]  # Test on multiple Python versions