Fix OAuth token_endpoint_auth_method to comply with OpenID Connect spec#660

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gavi wants to merge 3 commits intomodelcontextprotocol:mainfrom

Commits on Jul 30, 2025

OpenID Connect Spec: token_endpoint_auth_method should be client_secret_basic
gavi
committed

Commits on Aug 2, 2025

Merge branch 'main' into main
gavi
authored

Commits on Aug 20, 2025

Merge branch 'main' into main
olaservo
authored