chore(v7): release 7.4.1

[github-actions[bot]]

:robot: I have created a release beep boop

7.4.1 (2024-06-04)

Bug Fixes

• add warning log message if client init duration is longer than recommended (60s) (68e3440)
• align high timeout log msg with spec (#150) (606d224)
• resolve data race in Broadcasters system (#153) (68cb1a4)

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[cwaldren-ld]

Will wait on final wording for the init message before merging this.

[github-actions[bot]]

:robot: Release is at https://github.com/launchdarkly/go-server-sdk/releases/tag/v7.4.1 :sunflower: