ci: update workflow github

Author: juggler31

.github/workflows/python-app.yml

@@ -40,13 +40,13 @@ jobs:
       COVERALLS_REPO_TOKEN: ${{ secrets.COVERALLS_REPO_TOKEN }}
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v6
     - name: Set up Python ${{ matrix.python_version }}
-      uses: actions/setup-python@v2
+      uses: actions/setup-python@v5
       with:
         python-version: ${{ matrix.python_version }}
     - name: Cache pip
-      uses: actions/cache@v2
+      uses: actions/cache@v4
       with:
         # This path is specific to Ubuntu
         path: ~/.cache/pip