fix(deps): update dependency @react-native-firebase/app to v18.4.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
@react-native-firebase/app (source)	18.3.2 -> 18.4.0

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Release Notes

invertase/react-native-firebase (@​react-native-firebase/app)

v18.4.0

Compare Source

Features

• analytics: Add types to modular package (#​7109) (b6f64bf)
• app-check, android: Implement app check token change listener (#​7309) (adebe40)
• app-distribution: Firebase V9 modular API (#​7307) (309fec4)
• crashlytics: Firbase web modular V9 API (#​7283) (57f7327)
• dynamic-links: Firebase web V9 modular APIs (#​7296) (573a4ee)
• in-app-messaging: Firebase V9 modular APIs (#​7306) (0149480)

Bug Fixes

• storage, android: honor android_bypass_emulator_url_remap flag (#​7326) (794e081)

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