Fixes interaction of `maybe_skip_kafka_integration!` and `should_panic`
by ensuring that `maybe_skip_kafka_integration!` panics to skip
`should_panic` tests.
Without that it is not possible to just run `cargo test -p write_buffer`.
Co-authored-by: kodiakhq[bot] <49736102+kodiakhq[bot]@users.noreply.github.com>