Fix test "case-sensitive attributes hash"
Fix test "case-sensitive attributes hash"

Timestamp values on the CI has nsec precision so comparison by the
values is hard now.

https://buildkite.com/rails/rails/builds/75357#70cc9b6c-a37d-4159-8bf3-46a8ba49bb02/1069-1078

That actually tests attributes hash has the "extendedWarranty" key, so
it is enough just testing that.

EmmaB/rails-1,Edouard-chin/rails,georgeclaghorn/rails,kddeisz/rails,Vasfed/rails,kmcphillips/rails,MSP-Greg/rails,lcreid/rails,MSP-Greg/rails,Erol/rails,kddeisz/rails,lcreid/rails,yawboakye/rails,betesh/rails,joonyou/rails,Stellenticket/rails,kmcphillips/rails,kddeisz/rails,Vasfed/rails,MSP-Greg/rails,Stellenticket/rails,Envek/rails,kmcphillips/rails,EmmaB/rails-1,Erol/rails,georgeclaghorn/rails,rails/rails,Envek/rails,yawboakye/rails,yahonda/rails,Stellenticket/rails,esparta/rails,betesh/rails,bogdanvlviv/rails,Envek/rails,Vasfed/rails,joonyou/rails,esparta/rails,rails/rails,Edouard-chin/rails,Edouard-chin/rails,EmmaB/rails-1,Stellenticket/rails,Erol/rails,BlakeWilliams/rails,bogdanvlviv/rails,betesh/rails,georgeclaghorn/rails,kddeisz/rails,MSP-Greg/rails,bogdanvlviv/rails,Edouard-chin/rails,yahonda/rails,yahonda/rails,betesh/rails,Erol/rails,rails/rails,BlakeWilliams/rails,yawboakye/rails,esparta/rails,rails/rails,yawboakye/rails,kmcphillips/rails,esparta/rails,Envek/rails,BlakeWilliams/rails,bogdanvlviv/rails,lcreid/rails,lcreid/rails,Vasfed/rails,BlakeWilliams/rails,georgeclaghorn/rails,yahonda/rails,joonyou/rails,joonyou/rails