ci: fix npm publish workflow failure on npm upgrade step (#173)

* ci: remove failing npm self-upgrade from publish workflow

* ci: use latest patched Node 22 toolchain for publish

Author: federiconeri

.github/workflows/publish.yml

@@ -46,12 +46,10 @@ jobs:
       - uses: actions/setup-node@v6
         with:
           node-version: 22
+          check-latest: true
           cache: npm
           registry-url: https://registry.npmjs.org
 
-      - name: Upgrade npm for OIDC trusted publishing
-        run: npm install -g npm@latest
-
       - name: Install dependencies
         run: npm ci