Update tests.yml

Author: HardNorth

.github/workflows/tests.yml

@@ -23,10 +23,10 @@ jobs:
         python-version: [ '3.7', '3.8', '3.9', '3.10', '3.11' ]
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Set up Python ${{ matrix.python-version }}
-        uses: actions/setup-python@v4
+        uses: actions/setup-python@v5
         with:
           python-version: ${{ matrix.python-version }}
 
@@ -40,7 +40,7 @@ jobs:
 
       - name: Upload coverage to Codecov
         if: matrix.python-version == 3.8 && success()
-        uses: codecov/codecov-action@v3
+        uses: codecov/codecov-action@v4
         with:
           files: coverage.xml
           flags: unittests