ci(deps): bump actions/checkout from 6 to 7 (#23)

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/black.yml

@@ -12,7 +12,7 @@ jobs:
 
     name: Code Style
     steps:
-    - uses: actions/checkout@v6
+    - uses: actions/checkout@v7
     - uses: actions/setup-python@v6
       with:
         python-version: '3.x'

.github/workflows/release.yml

@@ -9,7 +9,7 @@ jobs:
     name: Build and Release to PyPI
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
 
       - name: Set up Python
         uses: actions/setup-python@v6