Update dependency firebase-admin to v12.4.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
firebase-admin (source)	12.3.1 -> 12.4.0

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Release Notes

firebase/firebase-admin-node (firebase-admin)

v12.4.0: Firebase Admin Node.js SDK v12.4.0

Compare Source

Miscellaneous

• [chore] Release 12.4.0 (#​2674)
• build(deps-dev): bump @​firebase/app-compat from 0.2.38 to 0.2.39 (#​2677)
• chore: Deprecate sendToTopic and Condition (#​2683)
• build(deps): bump @​types/node from 22.1.0 to 22.3.0 (#​2675)
• build(deps-dev): bump mocha from 10.7.0 to 10.7.3 (#​2670)
• build(deps): bump @​google-cloud/storage from 7.12.0 to 7.12.1 (#​2669)
• build(deps): bump axios in /.github/actions/send-email (#​2673)
• build(deps-dev): bump @​microsoft/api-extractor from 7.47.5 to 7.47.6 (#​2671)
• Reroute Cloud Tasks to emulator when it is running (#​2649)

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