chore(deps): update firebase_core_platform_interface to v8

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
firebase_core_platform_interface (source)	dependencies	major	^6.0.1 → ^8.0.0

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Warning

Some dependencies could not be looked up. Check the warning logs for more information.

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Release Notes

firebase/flutterfire (firebase_core_platform_interface)

v8.1.0

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• FEAT(appcheck): rCE provider api update (#​18505). (a56649a4)
• DOCS: fix code snippets that do not compile (#​18468). (85cbdcab)

v8.0.0

Compare Source

v7.1.0

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• FEAT(appcheck): appcheck reCAPTCHA mobile support (gradually rolling out) (#​18261). (036a860a)
• FEAT(core): Add Recaptcha Site Key to FirebaseOptions (#​18334). (57be7027)

v7.0.1

Compare Source

• FIX(core,iOS): use namespaced iOS Pigeon header import (#​18281). (7c1257e7)

v7.0.0

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• Bump platform interface a major version due to pigeon dependency update

• REFACTOR: move all packages to workspace (#​18182). (6cdfcb10)

• FEAT: upgrade pigeon to version 26.3.4 (#​18205). (cb6b4aef)

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