WIP: Set Github token

this should potentially avoid 429s on GitHub links

Author: urfeex

.github/workflows/check_links.yml

@@ -23,6 +23,7 @@ jobs:
         uses: lycheeverse/lychee-action@v2
         with:
           fail: true
+          token: ${{ secrets.GITHUB_TOKEN }}
           args: >
             --verbose
             --no-progress