fix: remove npm upgrade step, rely on pre-installed npm

Author: piotrski

.github/workflows/release.yml

@@ -26,15 +26,6 @@ jobs:
         with:
           node-version: '22'
 
-      - name: Update npm for OIDC trusted publishing
-        run: |
-          curl -fsSL https://registry.npmjs.org/npm/-/npm-11.3.0.tgz -o /tmp/npm.tgz
-          npm_root="$(dirname "$(dirname "$(which npm)")")/lib/node_modules/npm"
-          tar -xzf /tmp/npm.tgz -C /tmp
-          rm -rf "$npm_root"
-          mv /tmp/package "$npm_root"
-          npm --version
-
       - name: Install dependencies
         run: bun install