Simplify the CI tests using the Makefile

.github/workflows/ruff.yml

@@ -1,19 +1,23 @@
 name: Ruff
-on:
-  push:
-    branches: [ main ]
-  pull_request:
-    branches: [ main ]
+on: [push]
+
 jobs:
   ruff_py3:
     name: Ruff syntax check
     runs-on: ubuntu-latest
+
     steps:
+      - uses: actions/checkout@v4
+      - name: Setup Python
+        uses: actions/setup-python@v4
+        with:
+          python-version: 3.9
+          cache: 'pip'
       - name: Checkout
         uses: actions/checkout@master
       - name: Install Dependencies
         run: |
-          pip install --user ruff
+          pip install ruff
       - name: ruff
         run: |
-          ruff check --output-format github .
+          make ruff