chore(deps): update dependency flutter_lints to v6

[renovate]

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This PR contains the following updates:

Package	Type	Update	Change
flutter_lints (source)	dev_dependencies	major	^2.0.0 -> ^6.0.0
flutter_lints (source)	dev_dependencies	major	^4.0.0 -> ^6.0.0

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Release Notes

flutter/packages (flutter_lints)

v6.0.0

Compare Source

• Updates package:lints dependency to version 6.0.0, with the following changes:
  • adds strict_top_level_inference
  • adds unnecessary_underscores
• Updates minimum supported SDK version to Flutter 3.32/Dart 3.8.

v5.0.0

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• Updates package:lints dependency to version 5.0.0, with the following changes:
  • adds invalid_runtime_check_with_js_interop_types
  • adds unnecessary_library_name
  • removes avoid_null_checks_in_equality_operators
• Removes the following lints (see dart-lang/lints#205):
  • prefer_const_constructors
  • prefer_const_declarations
  • prefer_const_literals_to_create_immutables
• Updates minimum supported SDK version to Flutter 3.24/Dart 3.5.

v4.0.0

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• Updates package:lints dependency to version 4.0.0, with the following changes:
  • adds library_annotations
  • adds no_wildcard_variable_uses
  • removes package_prefixed_library_names
  • removes library_names

v3.0.2

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• Updates minimum supported SDK version to Flutter 3.13/Dart 3.1.
• Updates various links in comments and documentation.

v3.0.1

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• Replaces flutter pub add --dev with dev: in README.md.

v3.0.0

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• Updated package:lints dependency to version 3.0.0, with the following changes:
  • added collection_methods_unrelated_type
  • added dangling_library_doc_comments
  • added implicit_call_tearoffs
  • added secure_pubspec_urls
  • added type_literal_in_constant_pattern
  • added unnecessary_to_list_in_spreads
  • added use_string_in_part_of_directives
  • added use_super_parameters
  • removed iterable_contains_unrelated_type
  • removed list_remove_unrelated_type
  • removed no_wildcard_variable_uses
  • removed prefer_equal_for_default_values
  • removed prefer_void_to_null
• Updates minimum supported SDK version to Flutter 3.10 / Dart 3.0.

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