chore: [proposal] de-matrix python-version in GHAs (#27906)

.github/workflows/superset-python-misc.yml

@@ -17,9 +17,6 @@ concurrency:
 jobs:
   python-lint:
     runs-on: ubuntu-20.04
-    strategy:
-      matrix:
-        python-version: ["3.10"]
     steps:
       - name: "Checkout ${{ github.ref }} ( ${{ github.sha }} )"
         uses: actions/checkout@v4
@@ -34,8 +31,6 @@ jobs:
       - name: Setup Python
         uses: ./.github/actions/setup-backend/
         if: steps.check.outputs.python
-        with:
-          python-version: ${{ matrix.python-version }}
       - name: pylint
         if: steps.check.outputs.python
         # `-j 0` run Pylint in parallel
@@ -43,9 +38,6 @@ jobs:
 
   babel-extract:
     runs-on: ubuntu-20.04
-    strategy:
-      matrix:
-        python-version: ["3.10"]
     steps:
       - name: "Checkout ${{ github.ref }} ( ${{ github.sha }} )"
         uses: actions/checkout@v4
@@ -60,8 +52,6 @@ jobs:
       - name: Setup Python
         if: steps.check.outputs.python
         uses: ./.github/actions/setup-backend/
-        with:
-          python-version: ${{ matrix.python-version }}
       - name: Test babel extraction
         if: steps.check.outputs.python
         run: flask fab babel-extract --target superset/translations --output superset/translations/messages.pot --config superset/translations/babel.cfg -k _,__,t,tn,tct