Update dependency peripheryapp/periphery to v2.21.0

[renovate[bot]]

This PR contains the following updates:

Package	Update	Change
peripheryapp/periphery	minor	2.20.0 -> 2.21.0

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Release Notes

peripheryapp/periphery (peripheryapp/periphery)

### [`v2.21.0`](https://togithub.com/peripheryapp/periphery/blob/HEAD/CHANGELOG.md#2210-2024-06-15) [Compare Source](https://togithub.com/peripheryapp/periphery/compare/2.20.0...2.21.0) ##### Breaking - Removed support for Swift 5.8/Xcode 14.3. ##### Enhancements - Added baseline support. Write a baseline with `--write-baseline ` and use it with `--baseline `. ##### Bug Fixes - Fix local Swift package support.

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Configuration

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[github-actions[bot]]

Danger has errored

[!] Invalid Dangerfile file: error: ["bin/periphery", "scan", "--project", "spec/support/fixtures/test.xcodeproj", "--schemes", "test", "--targets", "test", "--disable-update-check", "--quiet", "--format", "checkstyle"] exited with status code 1. error: This version of Periphery only supports Swift >= 5.9, you`re using swift-driver version: 1.75.2 Apple Swift version 5.8.1 (swiftlang-5.8.0.124.5 clang-1403.0.22.11.100) Target: x86_64-apple-macosx13.0.

 #  from Dangerfile:8
 #  -------------------------------------------
 #  periphery.binary_path = 'bin/periphery'
 >  periphery.scan(project: 'spec/support/fixtures/test.xcodeproj', schemes: 'test', targets: 'test') do |violation|
 #    !violation.message.include?('unused')
 #  -------------------------------------------

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