Update lint workflow to use pre-commit

Author: honno

.github/workflows/lint.yml

@@ -16,10 +16,5 @@ jobs:
       uses: actions/setup-python@v1
       with:
         python-version: ${{ matrix.python-version }}
-    - name: Install dependencies
-      run: |
-        python -m pip install --upgrade pip
-        pip install pyflakes
-    - name: Lint with pyfalkes
-      run: |
-        pyflakes .
+    - name: Run pre-commit hook
+      uses: pre-commit/action@v2.0.3