Update CI to always use python3.10 for metaenv

.github/scripts/setup-env.sh

@@ -15,7 +15,7 @@ INSTALL_POETRY_VERSION="${POETRY_VERSION:-1.3.2}";
 mkdir --parents "$CI_CACHE";
 
 command -v python;
-python --version;
+python3.10 --version;
 
 curl --location https://install.python-poetry.org \
   --output "$CI_CACHE/install-poetry.py" \

.github/workflows/ci.yaml

@@ -29,6 +29,11 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v2
 
+      - name: Install Python 3.10
+        uses: actions/setup-python@v4
+        with:
+          python-version: "3.10"
+
       - name: Install Python ${{ matrix.python.version }}
         uses: actions/setup-python@v4
         with: