fix(C): Use node v20

Author: csuermann

.github/workflows/release.yaml

@@ -13,7 +13,7 @@ jobs:
       - name: Setup Node.js
         uses: actions/setup-node@v1
         with:
-          node-version: 18
+          node-version: 20
       - name: Install dependencies
         run: npm ci
       - name: Release