bugfix: build upon default sentry-go transport config

[RaghavSood]

Directly initializing the HTTPSyncTransport struct results in the non-exported limits map being nil, which can cause a panic in sentry-go under certain conditions

Change Summary

Fixes: #3642

What and Why: By setting the timeout on the default HTTPSyncTransport returned by NewHTTPSyncTransport, we avoid a panic within the sentry-go SDK

How:

Related to:

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Documentation

• [ ] Fresh Produce
• [ ] In superfly/docs, or asked for help from docs team
• [x] n/a

[dangra]

thanks @RaghavSood !