Update GitHub Actions workflow for Python app

Author: qwasd7680

.github/workflows/python-app.yml

@@ -1,39 +1,38 @@
-# This workflow will install Python dependencies, run tests and lint with a single version of Python
-# For more information see: https://docs.github.com/en/actions/automating-builds-and-tests/building-and-testing-python
-
 name: Pytest
 
 on:
   push:
     branches: [ "dev" ]
   pull_request:
-    branches: [ "main" ]
+    branches: [ "main", "dev" ]
 
 permissions:
   contents: read
 
 jobs:
   build:
-
     runs-on: ubuntu-latest
 
     steps:
     - uses: actions/checkout@v4
+
     - name: Set up Python 3.10
-      uses: actions/setup-python@v3
+      uses: actions/setup-python@v5
       with:
         python-version: "3.10"
+        cache: 'pip'
+
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip
         pip install flake8 pytest
         if [ -f requirements.txt ]; then pip install -r requirements.txt; fi
+
     - name: Lint with flake8
       run: |
-        # stop the build if there are Python syntax errors or undefined names
         flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics
-        # exit-zero treats all errors as warnings. The GitHub editor is 127 chars wide
         flake8 . --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics
+
     - name: Test with pytest
       run: |
         pytest