Fix CI Linting

.github/workflows/regression.yml

@@ -4,23 +4,40 @@ on:
   pull_request:
     branches: [ master ]
     paths:
+      - '.github/workflows/regression.yml'
       - '**/*.json'
       - '**/*.py'
       - '**/*.ini'
       - '**/*.toml'
   push:
     branches: [ master ]
     paths:
+      - '.github/workflows/regression.yml'
       - '**/*.json'
       - '**/*.py'
       - '**/*.ini'
       - '**/*.toml'
 
 jobs:
+  tox-lint:
+    # Linting is ran through tox to ensure that the same linter is used by local runners
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Set up linting environment
+        uses: actions/setup-python@v5
+        with:
+          python-version: '3.x'
+      - name: Install tox and related dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install tox
+      - name: Run tox linting environment
+        run: tox -e lint
   tox-matrix:
     runs-on: ${{ matrix.os }}
     strategy:
-      fail-fast: false # We want to know what version it fails on
+      fail-fast: false # We want to know what specicic versions it fails on
       matrix:
         os: [
           ubuntu-latest,
@@ -34,7 +51,6 @@ jobs:
           '3.11',
           '3.12',
         ]
-
     steps:
       - uses: actions/checkout@v4
       - name: Set up environment ${{ matrix.python-version }}