Run CI on Python 3.10 for pytest 9

Author: danieleongari

.github/workflows/docbuild.yml

@@ -9,7 +9,7 @@ jobs:
     strategy:
       max-parallel: 4
       matrix:
-        python-version: [3.9]
+        python-version: ['3.10']
 
     steps:
     - name: Checkout repo

.github/workflows/pythonpackage.yml

@@ -9,7 +9,7 @@ jobs:
     strategy:
       max-parallel: 4
       matrix:
-        python-version: [3.9]
+        python-version: ['3.10']
 
     steps:
     - uses: actions/checkout@v4