Lint action: Use ruff

.github/workflows/lint.yml

@@ -1,31 +1,35 @@
 name: lint
 
-on: [push, pull_request]
+on:
+  push:
+    branches:
+      - master
+  pull_request:
 
 jobs:
   windows:
     runs-on: windows-latest
     strategy:
       matrix:
-        versions:
+        vs-versions:
           - 68
         python-version:
           - '3.12'
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
+
       - name: Set up Python ${{ matrix.python-version }}
-        uses: actions/setup-python@v2
+        uses: actions/setup-python@v5
         with:
           python-version: ${{ matrix.python-version }}
+
       - name: Install dependencies
         run: |
           python3 -m pip install --upgrade pip
-          pip install vapoursynth-portable==${{ matrix.versions }}
+          pip install vapoursynth-portable==${{ matrix.vs-versions }}
           pip install -r requirements.txt
           pip install -r requirements-dev.txt
-      - name: Running flake8
-        run: flake8 vskernels
-      - name: Running mypy
-        if: steps.dependencies.outcome == 'success'
-        run: mypy vskernels
+
+      - name: Running ruff
+        run: ruff check vskernels

requirements-dev.txt

@@ -1,6 +1,3 @@
-flake8>=7.0.0
-mypy>=1.10.0
-mypy-extensions>=1.0.0
 packaging>=24.0
 pycodestyle>=2.11.1
-typing-extensions>=4.11.0
+ruff>=0.6.5