ci: usage of Node.js v20 for releasing

Author: theoludwig

.github/workflows/release.yml

@@ -20,7 +20,7 @@ jobs:
 
       - uses: "actions/setup-node@v4"
         with:
-          node-version: 18
+          node-version: 20
           cache: "npm"
 
       - run: "npm ci"