Update dependency rx_shared_preferences to v4

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
rx_shared_preferences (source)	dependencies	major	^3.0.0 → ^4.0.0

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Release Notes

hoc081098/rx_shared_preferences (rx_shared_preferences)

v4.0.0

Compare Source

• Update dependencies:
  • shared_preferences to ^2.1.2.
  • rx_storage to ^3.0.0 (supports rxdart: ^0.28.0 and rxdart_ext: ^0.3.0).
• Change Flutter constraint to '>=3.3.0'.
• Change Dart SDK constraint to '>=2.18.0 <4.0.0'.

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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
• the branch becomes conflicted, or
• you click the rebase/retry checkbox if found above, or
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The artifact failure details are included below:

File name: pubspec.lock

Command failed: flutter pub upgrade rx_shared_preferences
Because rx_shared_preferences >=4.0.0 depends on rx_storage ^3.0.0 which depends on rxdart_ext ^0.3.0, rx_shared_preferences >=4.0.0 requires rxdart_ext ^0.3.0.
So, because rx_mobile_team depends on both rx_shared_preferences ^4.0.0 and rxdart_ext ^0.2.9, version solving failed.


You can try the following suggestion to make the pubspec resolve:
* Consider downgrading your constraint on rx_shared_preferences: flutter pub add rx_shared_preferences:^3.1.0
Failed to update packages.