Pin python to 3.10 version

Author: maximpavliv

.github/workflows/testing.yml

@@ -13,7 +13,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest, macos-latest, windows-latest]
-        python-version: ["3.9", "3.10"]
+        python-version: ["3.10"]
         include:
           - os: ubuntu-latest
             path: ~/.cache/pip
@@ -50,7 +50,7 @@ jobs:
           fi
         shell: bash
 
-      - name: Install PyTables through Conda
+      - name: Install and test
         shell: bash -el {0}  # Important: activates the conda environment
         run: |
           python -m pip install --upgrade pip wheel poetry