fix: remove registry-url from setup-node to allow OIDC auth

setup-node's registry-url writes an .npmrc that expects NODE_AUTH_TOKEN,
which overrides the OIDC-based trusted publishing. Remove it and set
the registry via npm config instead.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: cpaczek

.github/workflows/release.yml

@@ -23,7 +23,9 @@ jobs:
         with:
           node-version: 20
           cache: pnpm
-          registry-url: https://registry.npmjs.org
+
+      - name: Configure npm registry
+        run: npm config set registry https://registry.npmjs.org/
 
       - name: Install dependencies
         run: pnpm install --frozen-lockfile