Bump node version for GHA

Author: wch

.github/workflows/publish.yml

@@ -17,7 +17,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: actions/setup-node@v4
         with:
-          node-version: "18.x"
+          node-version: "20.x"
 
       - run: npm ci