ci: update node version from 10 to 12

.github/workflows/release.yml

@@ -62,7 +62,7 @@ jobs:
       - name: Install Node.js, NPM and Yarn
         uses: actions/setup-node@v1
         with:
-          node-version: 10
+          node-version: 12
 
       - name: Install Snapcraft
         uses: samuelmeuli/action-snapcraft@v1