fix(deps): update module github.com/docker/docker to v28.5.1+incompatible

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
github.com/docker/docker	v28.4.0+incompatible -> v28.5.1+incompatible

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Release Notes

docker/docker (github.com/docker/docker)

v28.5.1+incompatible

Compare Source

v28.5.0+incompatible

Compare Source

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Configuration

📅 Schedule: Branch creation - "after 10pm every weekday,before 5am every weekday,every weekend" in timezone America/New_York, Automerge - At any time (no schedule defined).

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♻ Rebasing: Whenever PR is behind base branch, 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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[renovate]

⚠️ Artifact update problem

Renovate failed to update an artifact related to this branch. You probably do not want to merge this PR as-is.

♻ Renovate will retry this branch, including artifacts, only when one of the following happens:

• any of the package files in this branch needs updating, or
• the branch becomes conflicted, or
• you click the rebase/retry checkbox if found above, or
• you rename this PR's title to start with "rebase!" to trigger it manually

The artifact failure details are included below:

File name: build/go.sum

Command failed: go get -t ./...
go: downloading dagger.io/dagger v0.18.17
go: downloading github.com/docker/docker v28.5.1+incompatible
go: go.flipt.io/build imports
	go.flipt.io/build/internal/dagger: cannot find module providing package go.flipt.io/build/internal/dagger

[kodiakhq]

This PR currently has a merge conflict. Please resolve this and then re-add the automerge label.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 63.84%. Comparing base (d969e50) to head (06e574b).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #4837      +/-   ##
==========================================
- Coverage   63.87%   63.84%   -0.04%     
==========================================
  Files         172      172              
  Lines       17662    17662              
==========================================
- Hits        11282    11276       -6     
- Misses       5705     5709       +4     
- Partials      675      677       +2     

Flag	Coverage Δ
unittests	63.84% <ø> (-0.04%)	⬇️

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