Update nightly.yaml

Author: weswigham

.github/workflows/nightly.yaml

@@ -14,10 +14,10 @@ jobs:
 
     steps:
     - uses: actions/checkout@v2
-    - name: Use node version 12
+    - name: Use node version 14
       uses: actions/setup-node@v1
       with:
-        node-version: 12
+        node-version: 14
         registry-url: https://registry.npmjs.org/
     - name: Setup and publish nightly
       run: |