ci: bump release job to node v14

Author: Roland Groza

.github/workflows/release.yml

@@ -13,7 +13,7 @@ jobs:
       - uses: actions/checkout@v2
       - uses: actions/setup-node@v1
         with:
-          node-version: "12.x"
+          node-version: "14.x"
       - run: yarn install --pure-lockfile
       - run: yarn build
       - run: npx semantic-release