fix: upgrade npm to latest for OIDC trusted publishing support

Node.js 22 ships with npm v10 which has a known bug in the OIDC
token exchange for trusted publishing. Upgrading to npm@latest
(v11.5.1+) resolves the 'Access token expired' error.

Author: rchardx

.github/workflows/release.yml

@@ -45,6 +45,10 @@ jobs:
         with:
           node-version: 22
           cache: pnpm
+          registry-url: https://registry.npmjs.org
+
+      - name: Upgrade npm for trusted publishing
+        run: npm install -g npm@latest
 
       - name: Install dependencies
         run: pnpm install --frozen-lockfile