Bump node version in GitHub action

Author: robbieaverill

.github/workflows/release.yml

@@ -13,7 +13,7 @@ jobs:
       - name: Setup Node.js
         uses: actions/setup-node@v2
         with:
-          node-version: 12
+          node-version: 14
       - name: Install dependencies
         run: yarn
       - name: Release