Update action in link-validator.yml (#104)

Author: pjfanning

.github/workflows/link-validator.yml

@@ -27,7 +27,7 @@ jobs:
         uses: coursier/cache-action@v6
 
       - name: Setup Coursier
-        uses: coursier/setup-action@v1.3.3
+        uses: coursier/setup-action@v1
 
       - name: sbt site
         run: sbt docs/makeSite