Update dependency rubocop-rspec to v3.0.3

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
rubocop-rspec (changelog)	3.0.1 -> 3.0.3

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Release Notes

rubocop/rubocop-rspec (rubocop-rspec)

v3.0.3

Compare Source

• Add support for Unicode RIGHT SINGLE QUOTATION MARK in RSpec/ExampleWording. ([@​jdufresne])
• Suppress deprecation warning for RSpec/MultipleExpectations, RSpec/MultipleMemoizedHelpers, and RSpec/NestedGroups cops. ([@​koic])

v3.0.2

Compare Source

• Fix wrong autocorrect for RSpec/ScatteredSetup when hook contains heredoc. ([@​earlopain])
• Fix false negative for RSpec/PredicateMatcher when expectation contains custom failure message. ([@​earlopain])
• Facilitate the 3.0 upgrade flow with proper extracted cop messages. ([@​jeppester])

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