chore: upgrade Bun to fix race condition in tests [DET-10193]

[NicholasBlaskey]

Description

Applies actual fix by upgrading bun to a version where the race isn't an issue

https://app.circleci.com/pipelines/github/determined-ai/determined/53322/workflows/afff1432-f6d9-4aa2-ae88-be17e7f69e46/jobs/2405408

Test Plan

Looped intg a bunch

Commentary (optional)

Checklist

• Changes have been manually QA'd
• User-facing API changes need the "User-facing API Change" label.
• Release notes should be added as a separate file under docs/release-notes/.
  See Release Note for details.
• Licenses should be included for new code which was copied and/or modified from any external code.

Ticket

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 47.05%. Comparing base (f78b9aa) to head (67768d2).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #9082      +/-   ##
==========================================
- Coverage   47.07%   47.05%   -0.02%     
==========================================
  Files        1155     1155              
  Lines      142400   142400              
  Branches     2421     2423       +2     
==========================================
- Hits        67034    67009      -25     
- Misses      75176    75201      +25     
  Partials      190      190              

Flag	Coverage Δ
backend	42.88% <ø> (-0.06%)	⬇️
harness	64.07% <ø> (ø)
web	38.95% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

see 6 files with indirect coverage changes

[carolinaecalderon]

LGTM
does this also apply to RM-57?