fix: only install npm if setup-node ran (#1469)

Signed-off-by: Lukas Reining <lukas.reining@codecentric.de>

Author: lukas-reining

.github/workflows/release-please.yml

@@ -36,6 +36,7 @@ jobs:
           registry-url: "https://registry.npmjs.org"
           cache: 'npm'
       - name: Update npm (for OIDC auth)
+        if: ${{ steps.release.outputs.releases_created }}
         run: npm install -g npm@^11.5.1
       - name: Build Packages
         if: ${{ steps.release.outputs.releases_created }}