ci(release): use node 16

Author: gr2m

.github/workflows/release.yml

@@ -10,7 +10,9 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
-      - uses: actions/setup-node@v1
+      - uses: actions/setup-node@v2
+        with:
+          node-version: 16
       - run: npm ci
       - run: npm run build
       - run: rm .gitignore # dist/ folder is ignored by default