Bump lycheeverse/lychee-action from 2.3.0 to 2.6.1

Bumps [lycheeverse/lychee-action](https://github.com/lycheeverse/lychee-action) from 2.3.0 to 2.6.1.
- [Release notes](https://github.com/lycheeverse/lychee-action/releases)
- [Commits](lycheeverse/lychee-action@v2.3.0...v2.6.1)

---
updated-dependencies:
- dependency-name: lycheeverse/lychee-action
  dependency-version: 2.6.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

.github/workflows/check-links.yml

@@ -33,7 +33,7 @@ jobs:
           restore-keys: cache-lychee-
       - name: Link Checker
         id: lychee
-        uses: lycheeverse/lychee-action@v2.3.0
+        uses: lycheeverse/lychee-action@v2.6.1
         with:
           fail: true
           args: --max-concurrency 1 --cache --no-progress --exclude-all-private './**/*.md'