Update module firebase.google.com/go to v4

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
firebase.google.com/go	require	major	v3.13.0+incompatible -> v4.0.0

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Release Notes

firebase/firebase-admin-go

v4.0.0

Compare Source

API Changes

• Admin SDK has opted into Go modules. The package name now has the major version appended to it. Developers should use the new package name firebase.google.com/go/v4 when installing and importing the SDK.
• The messaging.WebpushFcmOptions type has been renamed to messaging.WebpushFCMOptions.

Features

• feat: Added a new errorutils package that provides functions for checking for platform-level error codes.
• feat(fcm): Added new service-level error checking functions IsThirdPartyAuthError(), IsQuotaExceeded(), IsSenderIDMismatch(), IsUnregistered() and IsUnavailable().
• feat(auth): Added new service-level error checking functions IsIDTokenInvalid(), IsIDTokenExpired(), IsSessionCookieInvalid(), IsSessionCookieExpired() and IsCertificateFetchFailed(). These functions can be used in conjunction with the existing JWT verification APIs provided by the SDK.

Bug Fixes

• fix: Removed import path comments (#​380)
• fix(fcm): Add ability to override default FCM endpoint via ClientOptions (#​373)

Miscellaneous

• [chore] Release 4.0.0 - take 2 (#​384)
• [chore] Release 4.0.0 (#​383)
• chore: Adding a CI job to build in non-module (gopath) mode (#​381)
• chore: Merging v4 branch into dev (#​370)
• Snippets for bulk get/delete function (#​328)

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