ci: bump setup-node to v6

Author: roncohen

.github/workflows/publish.yml

@@ -16,7 +16,7 @@ jobs:
       # Setup .npmrc file to publish to npm
       - name: Enable corepack
         run: corepack enable
-      - uses: actions/setup-node@v4
+      - uses: actions/setup-node@v6
         with:
           node-version-file: ".nvmrc"
           cache: "yarn"