chore(deps): update dependency league/oauth2-client to v2.8.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
league/oauth2-client (source)	2.7.0 -> 2.8.0

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Release Notes

thephpleague/oauth2-client (league/oauth2-client)

v2.8.0

Compare Source

Released: 2024-12-11

• This version is certified for PHP 8.3 and PHP 8.4! 🎉
• Fix cases where expires is not a number #​929
• Add SettableRefreshTokenInterface to support setting the refresh token
  #​994
• Set minimum version of Guzzle to 6.5.8 and 7.4.5, due to security vulnerabilities
  reported in earlier versions #​1022
• Fix parameter docblock type hint for AbstractProvider::prepareAccessTokenResponse()
  #​1025
  • Take note, this might affect static analysis reports for downstream providers
• Send scopes with access token request #​1029
  #​1030
• Explicitly mark nullable parameter #​1034
  #​1039
  • This change requires PHP 7.1 as the minimum version for this library
• Plus a number of test and documentation improvements; see the
  commit log
  for more details

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