Update flake-lint.yml (#100)

Signed-off-by: Julius von Kohout <[email protected]>

Author: juliusvonkohout

.github/workflows/flake-lint.yml

@@ -11,11 +11,11 @@ jobs:
     name: Lint
     steps:
       - name: Check out source repository
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
       - name: Set up Python environment
         uses: actions/setup-python@v1
         with:
-          python-version: "3.7"
+          python-version: "3.11"
       - name: flake8 Lint
         uses: py-actions/flake8@v1
         with: