Using npx for link-checker

.gitlab-ci.yml

@@ -3,6 +3,7 @@ include:
     file: nodejs.yml
 
 check help consistency:
+  extends: .unit tests
   stage: test
   script: yarn check-links
 

package.json

@@ -4,7 +4,7 @@
   "description": "App Suite UI Help",
   "license": "AGPL-3.0-or-later",
   "scripts": {
-    "check-links": "yarn link-checker help/ --disable-external",
+    "check-links": "npx --yes link-checker help/ --disable-external",
     "test": "echo VGhpcyBpcyBmaW5lLi4u8J+UpQo= | base64 -d && true"
   },
   "dependencies": {
@@ -24,7 +24,6 @@
     "grunt-newer": "^1.3.0",
     "grunt-require-gettext": "^0.8.1",
     "open-xchange-shared-grunt-config": "^0.15.0-pre3",
-    "underscore": "^1.8.3",
-    "link-checker": "^1.4.2"
+    "underscore": "^1.8.3"
   }
 }