GitHub CI: No cache, update V of checkout and setup-python

Author: jarofgreen

.github/workflows/lint.yml

@@ -5,18 +5,12 @@ jobs:
   lint:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
     - name: Setup python
-      uses: actions/setup-python@v2
+      uses: actions/setup-python@v5
       with:
         python-version: 3.9
         architecture: x64
-    - uses: actions/cache@v1
-      with:
-        path: ~/.cache/pip
-        key: ${{ runner.os }}-pip-${{ hashFiles('**/requirements_dev.txt') }}-${{ matrix.python-version }}
-        restore-keys: |
-          ${{ runner.os }}-pip-
     - run: pip install -e .[dev]
     - run: isort --check-only libcoveweb2 setup.py
     - run: black --check libcoveweb2 setup.py