chore(deps): update oven/bun docker tag to v1.1.31

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
oven/bun	stage	patch	1.1.30-slim -> 1.1.31-slim

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Release Notes

oven-sh/bun (oven/bun)

v1.1.31

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Configuration

📅 Schedule: Branch creation - "on the first day of the week" in timezone Asia/Tokyo, Automerge - At any time (no schedule defined).

🚦 Automerge: Enabled.

♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

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• If you want to rebase/retry this PR, check this box

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 59.01%. Comparing base (35db81d) to head (3144c4a).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1398   +/-   ##
=======================================
  Coverage   59.01%   59.01%           
=======================================
  Files         112      112           
  Lines        7342     7342           
  Branches      530      530           
=======================================
  Hits         4333     4333           
  Misses       2480     2480           
  Partials      529      529           

Flag	Coverage Δ
unittests	59.01% <ø> (ø)

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