chore(deps): update actions/checkout action to v5

Author: renovate[bot]

.github/workflows/main.yml

@@ -16,7 +16,7 @@ jobs:
 
     steps:
     # Check out repository under $GITHUB_WORKSPACE, so the job can access it
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v5
 
     # Run using Python 3.8 for consistency and aiohttp
     - name: Set up Python 3.8