Update node versions in build for tailwind

Author: ahaasler

.github/workflows/build.yml

@@ -9,7 +9,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        node-version: [10.x, 12.x]
+        node-version: [12.x, 14.x]
     steps:
     - name: Checkout repo
       uses: actions/checkout@v2