fix(ci): Update npm to support OIDC for trusted publishing (#55)

See also https://docs.npmjs.com/trusted-publishers

Author: joeyparrish

.github/workflows/release-please.yml

@@ -39,6 +39,10 @@ jobs:
           registry-url: 'https://registry.npmjs.org'
         if: ${{ steps.release.outputs.release_created }}
 
+      # Ensure npm 11.5.1 or later is installed for OIDC
+      - name: Update npm
+        run: npm install -g npm@latest
+
       - run: npm ci
         if: ${{ steps.release.outputs.release_created }}