Match max-parallel with test command in workflow

Author: adamspd

.github/workflows/tests.yml

@@ -16,7 +16,7 @@ jobs:
   testing:
     runs-on: ubuntu-20.04
     strategy:
-      max-parallel: 4
+      max-parallel: 10
       matrix:
         python-version: [3.10.5]
         fail-fast: [false]