use tox 4.2.4 for tests

Author: rekby

.github/workflows/style.yaml

@@ -22,6 +22,6 @@ jobs:
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip
-        pip install tox
+        pip install tox==4.2.4
     - name: Test with tox
       run: tox -e ${{ matrix.environment }}

.github/workflows/tests.yaml

@@ -24,6 +24,6 @@ jobs:
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip
-        pip install tox
+        pip install tox==4.2.4
     - name: Test with tox
       run: tox -e ${{ matrix.environment }}