Upgrade node version in the release workflow

Author: Andarist

.github/workflows/release.yml

@@ -16,10 +16,10 @@ jobs:
         with:
           fetch-depth: 0
 
-      - name: Setup Node.js 10.x
+      - name: Setup Node.js 12.x
         uses: actions/setup-node@master
         with:
-          node-version: 10.x
+          node-version: 12.x
 
       - name: Install Yarn
         run: npm install --global yarn