Bump lycheeverse/lychee-action from 1.5.0 to 2.1.0

Bumps [lycheeverse/lychee-action](https://github.com/lycheeverse/lychee-action) from 1.5.0 to 2.1.0.
- [Release notes](https://github.com/lycheeverse/lychee-action/releases)
- [Commits](lycheeverse/lychee-action@v1.5.0...v2.1.0)

---
updated-dependencies:
- dependency-name: lycheeverse/lychee-action
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

.github/workflows/links.yml

@@ -16,7 +16,7 @@ jobs:
       - uses: actions/checkout@v4
       - name: lychee Link Checker
         id: lychee
-        uses: lycheeverse/lychee-action@v1.5.0
+        uses: lycheeverse/lychee-action@v2.1.0
         with:
           args: --accept=200,403,429  "**/*.html" "**/*.md" "**/*.txt" "**/*.json" --exclude "file:///github/workspace/*" --exclude-mail
           fail: true