[Firestore] Pipelines API is not useable with this package

[aronsuarez]

• Operating System version: MacOS
• Firebase SDK version: 13.9.0
• Firebase Product: Firestore
• Node.js version: 24
• NPM version: 11.6.2

Steps to reproduce:

The Admin Package uses the wrong @google-cloud/firestore package version. The docs https://firebase.google.com/docs/firestore/enterprise/quickstart-server show clearly how to use the new pipelines api, but this is not in the firebase-admin package because the package uses the version 7 from @google-cloud/firestore