BulkTracker v2025.5.1 update

[Benny Siegert <bsiegert%gmail.com@localhost>]

Hi!

I just updated https://releng.netbsd.org/bulktracker/ to version 
2025.5.1. These are the release notes:

This release contains a fix for issue #93. There should be fewer 
"deadline exceeded" errors when fetching build logs in the background -- 
and if there are, we show a nicer error message instead.

Thanks @acirep for your contribution!

--
Benny