Bump actions/checkout from 4 to 5 (#10)

Author: dependabot[bot]

.github/workflows/black.yml

@@ -14,7 +14,7 @@ jobs:
         python-version: ['3.9']
 
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v5
     - name: Set up Python ${{ matrix.python-version }}
       uses: actions/setup-python@v5
       with:

.github/workflows/flake8.yml

@@ -14,7 +14,7 @@ jobs:
         python-version: ['3.9']
 
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v5
     - name: Set up Python ${{ matrix.python-version }}
       uses: actions/setup-python@v5
       with: