Update dependency flutter_lints to v6

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
flutter_lints (source)	dev_dependencies	major	^5.1.1 → 6.0.0
flutter_lints (source)	dev_dependencies	major	^2.0.1 → 6.0.0
flutter_lints (source)	dev_dependencies	major	^1.0.0 → 6.0.0
flutter_lints (source)	dev_dependencies	major	^2.0.0 → 6.0.0

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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

flutter/packages (flutter_lints)

v6.0.0

Compare Source

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[sourcery-ai]

Reviewer's Guide

This PR uniformly updates the flutter_lints dev dependency to version ^6.0.0 across examples and packages by changing the version specification in each pubspec.yaml, aligning the project with Flutter 3.32/Dart 3.8 and enabling the new strict lint rules.

File-Level Changes

Change	Details	Files
Upgrade flutter_lints dev dependency to ^6.0.0 across the repository	In talker_dio_logger example pubspec.yaml, replace flutter_lints ^2.0.0 with ^6.0.0 In talker_flutter example pubspec.yaml, replace flutter_lints ^1.0.0 with ^6.0.0 In talker_flutter package pubspec.yaml, replace flutter_lints ^2.0.1 with ^6.0.0	packages/talker_dio_logger/example/pubspec.yaml packages/talker_flutter/example/pubspec.yaml packages/talker_flutter/pubspec.yaml

Possibly linked issues

• #0: Updates flutter_lints to v6, listed as an open update in the dependency dashboard issue.

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