Update dependency doorkeeper to v5.8.1

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
doorkeeper (changelog)	"5.7.1" -> "5.8.1"

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Release Notes

doorkeeper-gem/doorkeeper (doorkeeper)

v5.8.1

Compare Source

• [#​1752] Bump the range of supported Ruby and Rails versions
• [#​1747] Fix unknown pkce method error when configured
• [#​1744] Allow for expired refresh tokens to be revoked
• [#​1754] Fix refresh tokens with dynamic scopes

v5.8.0

Compare Source

• [#​1739] Add support for dynamic scopes
• [#​1715] Fix token introspection invalid request reason
• [#​1714] Fix Doorkeeper::AccessToken.find_or_create_for with empty scopes which raises NoMethodError
• [#​1712] Add Pragma: no-cache to token response
• [#​1726] Refactor token introspection class.
• [#​1727] Allow to set null secret value for Applications if they are public.
• [#​1735] Add pkce_code_challenge_methods config option.

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Code Coverage Report: Only Changed Files listed

Package	Coverage
Overall Coverage	🟢 85%

Minimum allowed coverage is 0%, this run produced 85%