Update Flutters deps depending on source_gen to v4

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
riverpod_annotation	dependencies	major	3.0.0 → 4.0.3
riverpod_generator	dev_dependencies	major	3.0.0 → 4.0.4

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Warning

Some dependencies could not be looked up. Check the Dependency Dashboard for more information.

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Release Notes

rrousselGit/riverpod (riverpod_annotation)

v4.0.3

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v4.0.2

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v4.0.1

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v4.0.0

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v3.0.3

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v3.0.2

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v3.0.1

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[renovate]

⚠️ Artifact update problem

Renovate failed to update an artifact related to this branch. You probably do not want to merge this PR as-is.

♻ Renovate will retry this branch, including artifacts, only when one of the following happens:

• any of the package files in this branch needs updating, or
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The artifact failure details are included below:

File name: pubspec.lock

Command failed: flutter pub upgrade riverpod_annotation riverpod_generator
Because json_serializable 6.11.1 depends on analyzer >=7.4.0 <9.0.0 and riverpod_generator >=4.0.4-dev.1 depends on analyzer ^12.0.0, json_serializable 6.11.1 is incompatible with riverpod_generator >=4.0.4-dev.1.
So, because frigoligo depends on both json_serializable 6.11.1 and riverpod_generator 4.0.4, version solving failed.
Failed to update packages.