Update actions/setup-node requirement to v2.1.5 (#719)

Author: dependabot[bot]

.github/workflows/sauce.yml

@@ -8,7 +8,7 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v1
       - name: Set up node
-        uses: actions/setup-node@v1
+        uses: actions/setup-node@v2
         with:
           node-version: 14
       - name: Install