deps(deps): bump lycheeverse/lychee-action from 2.7.0 to 2.8.0 (#328)

Bumps [lycheeverse/lychee-action](https://github.com/lycheeverse/lychee-action) from 2.7.0 to 2.8.0.
- [Release notes](https://github.com/lycheeverse/lychee-action/releases)
- [Commits](a8c4c7cb88...8646ba3053)

---
updated-dependencies:
- dependency-name: lycheeverse/lychee-action
  dependency-version: 2.8.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/link-checker.yml

@@ -16,6 +16,6 @@ jobs:
           restore-keys: cache-lychee-
 
       - name: Link Checker
-        uses: lycheeverse/lychee-action@a8c4c7cb88f0c7386610c35eb25108e448569cb0 # v2
+        uses: lycheeverse/lychee-action@8646ba30535128ac92d33dfc9133794bfdd9b411 # v2
         with:
           args: --config ./lychee.toml README.md