Update dependency equatable to v2

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
equatable	dependencies	major	^1.2.5 -> 2.0.7

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Release Notes

felangel/equatable (equatable)

v2.0.7

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• revert: equals in equatable_utils (#​190)
• fix: explicitly handle num equality comparisons (#​189)

v2.0.6

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• perf: improve equality comparison performance (#​173)
• docs: improve snippet in README (#​184)
• chore: upgrade example to Dart >=3.5.0
• chore: add funding and topics to pubspec.yaml (#​176)
• chore: add performance benchmarks
• chore: fix typo in inline API docs (#​170)
• refactor: simplify toString logic (#​140)
• docs: add nullable props example to README
• refactor: update analysis_options.yaml (#​169)
• fix: add @immutable to EquatableMixin (#​154)

v2.0.5

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• fix: resolves T not a subtype of type 'Comparable<dynamic>' when computing hashCode

v2.0.4

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• fix: use SplayTreeSet to resolve inconsistent hashCode for properties of type Set (#​142)

v2.0.3

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• fix: revert EquatableMixin == to use Object (#​122)

v2.0.2

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• fix: Map prop with non-comparable key

v2.0.1

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• fix: hashCode should be the same for equal objects (Map fix)

v2.0.0

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• BREAKING: opt into null safety
  • feat!: upgrade Dart SDK constraints to >=2.12.0-0 <3.0.0
• BREAKING: stringify prints "null" for null properties instead of ""
• feat: EquatableConfig.stringify defaults to true in debug mode.
• fix: support legacy equality overrides with EquatableMixin
• fix: iterable equality comparisons (#​101)
• fix: stringify instance with long properties (#​94)
• chore: update dependencies
  • collection: ^1.15.0
  • meta: ^1.3.0
• docs: minor updates to README and example

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⚠️ Artifact update problem

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

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The artifact failure details are included below:

File name: pubspec.lock

Command failed: flutter pub upgrade equatable
The current Dart SDK version is 2.10.5.

Because flutter_new_instagram depends on equatable >=2.0.0-nullsafety.0 which requires SDK version >=2.12.0-0 <4.0.0, version solving failed.
pub upgrade failed (1; Because flutter_new_instagram depends on equatable >=2.0.0-nullsafety.0 which requires SDK version >=2.12.0-0 <4.0.0, version solving failed.)