Bump lycheeverse/lychee-action in /.github/workflows

Bumps [lycheeverse/lychee-action](https://github.com/lycheeverse/lychee-action) from ec7614d7605b47efb08dc370f6d0a71884cba944 to ef8c8f32c278e9eed290c6e6c96748f16b6cd335.
- [Release notes](https://github.com/lycheeverse/lychee-action/releases)
- [Commits](lycheeverse/lychee-action@ec7614d...ef8c8f3)

---
updated-dependencies:
- dependency-name: lycheeverse/lychee-action
  dependency-type: direct:production
...

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

.github/workflows/link-checker.yml

@@ -34,7 +34,7 @@ jobs:
       # Run link checker on the generated HTML
       - name: Link Checker
         id: lychee
-        uses: lycheeverse/lychee-action@ec7614d7605b47efb08dc370f6d0a71884cba944 # 1.8.0
+        uses: lycheeverse/lychee-action@ef8c8f32c278e9eed290c6e6c96748f16b6cd335 # 1.8.0
         with:
           fail: true
           args: >