Update ghpagesTest.yml (#636)

upping the lychee-action version number

.github/workflows/ghpagesTest.yml

@@ -102,7 +102,7 @@ jobs:
 
       - name: Html Broken Link Checker
         id: lychee
-        uses: lycheeverse/lychee-action@v1.5.1
+        uses: lycheeverse/lychee-action@v1.8.0
         env:
           GITHUB_TOKEN: ${{secrets.GITHUB_TOKEN}}
         with: