👷 Add pytest GH workflow.

.github/workflows/test.yaml

@@ -35,12 +35,12 @@ jobs:
       run:
         shell: bash
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           fetch-depth: 0
 
       - name: Set up Python ${{ matrix.python-version }}
-        uses: actions/setup-python@v4
+        uses: actions/setup-python@v5
         with:
           python-version: ${{ matrix.python-version }}
 
@@ -61,7 +61,7 @@ jobs:
           poetry config virtualenvs.in-project true
 
       - name: Set up cache
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         id: cache
         with:
           path: .venv