chore: update npm on release workflow

Author: Belco90

.github/workflows/release.yml

@@ -39,6 +39,11 @@ jobs:
         with:
           cache: 'pnpm'
           node-version-file: '.nvmrc'
+          registry-url: 'https://registry.npmjs.org'
+
+      # Ensure npm 11.5.1 or later is installed for correct OIDC publishing
+      - name: Update npm
+        run: npm install -g npm@latest
 
       - name: Install dependencies
         run: pnpm install