restrict workflow run and cache dependencies for faster reruns

There is no need to do a full installation to use ruff this will make the workflow faster

Author: john0isaac

.github/workflows/python-code-quality.yaml

@@ -3,23 +3,34 @@ name: Python code quality
 on:
   push:
     branches: [ main ]
+    paths:
+      - '**.py'
+
   pull_request:
     branches: [ main ]
+    paths:
+      - '**.py'
+
+  workflow_dispatch:
+
+permissions:
+  contents: read
 
 jobs:
-  build:
+  checks-format-and-lint:
     runs-on: ubuntu-latest
     steps:
         - uses: actions/checkout@v4
         - name: Set up Python 3
           uses: actions/setup-python@v5
           with:
             python-version: "3.12"
+            cache: 'pip'
         - name: Install dependencies
           run: |
-            python -m pip install --upgrade pip
-            pip install -r requirements-dev.txt
+            python3 -m pip install --upgrade pip
+            python3 -m pip install ruff
         - name: Lint with ruff
           run: ruff check .
         - name: Check formatting with ruff
-          run: ruff format --check .
+          run: ruff format . --check