ci: check build requirement before setting up python

[skip ci]

.github/workflows/patch-mariadb-tests.yml

@@ -30,26 +30,28 @@ jobs:
       - name: Clone
         uses: actions/checkout@v3
 
+      - name: Check if build should be run
+        id: check-build
+        run: |
+          python "${GITHUB_WORKSPACE}/.github/helper/roulette.py"
+        env:
+          TYPE: "server"
+          PR_NUMBER: ${{ github.event.number }}
+          REPO_NAME: ${{ github.repository }}
+
       - name: Setup Python
+        if: ${{ steps.check-build.outputs.build == 'strawberry' }}
         uses: "gabrielfalcao/pyenv-action@v10"
         with:
           versions: 3.10:latest, 3.7:latest
 
       - name: Setup Node
+        if: ${{ steps.check-build.outputs.build == 'strawberry' }}
         uses: actions/setup-node@v3
         with:
           node-version: 14
           check-latest: true
 
-      - name: Check if build should be run
-        id: check-build
-        run: |
-          python "${GITHUB_WORKSPACE}/.github/helper/roulette.py"
-        env:
-          TYPE: "server"
-          PR_NUMBER: ${{ github.event.number }}
-          REPO_NAME: ${{ github.repository }}
-
       - name: Add to Hosts
         if: ${{ steps.check-build.outputs.build == 'strawberry' }}
         run: echo "127.0.0.1 test_site" | sudo tee -a /etc/hosts