Merge pull request #4 from pythonanywhere/renovate/actions-setup-python-5.x

chore(deps): update actions/setup-python action to v5

Author: filiplajszczak

.github/workflows/tests.yaml

@@ -20,7 +20,7 @@ jobs:
         timezone: UTC
 
     - name: Set up Python
-      uses: actions/setup-python@v2
+      uses: actions/setup-python@0b93645e9fea7318ecaed2b359559ac225c90a2b # v5
       with:
         python-version: ${{ matrix.python-version }}