Update node in docs workflow

Author: marcusolsson

.github/workflows/docs.yml

@@ -15,7 +15,7 @@ jobs:
       - uses: actions/checkout@v1
       - uses: actions/setup-node@v1
         with:
-          node-version: '12.x'
+          node-version: '14.x'
 
       - name: Add key to allow access to repository
         env: