chore(deps): upgrade testcontainers-go to v0.42.0

[appleboy]

Summary

• Bump testcontainers-go from v0.41.0 to v0.42.0
• Bump testcontainers-go/modules/postgres from v0.41.0 to v0.42.0
• Update transitive dependencies for moby modules migration (moby/client v0.4.0, moby/api v1.54.1)

Test plan

• make build compiles successfully
• go test ./internal/store/... passes (Docker not available, test correctly skipped)
• PostgreSQL integration test with Docker available

🤖 Generated with Claude Code

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.

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[Copilot]

Pull request overview

Upgrades the project’s Testcontainers dependencies (and related Docker/moby transitive modules) to keep integration-test infrastructure current and compatible with upstream dependency migrations.

Changes:

• Bump github.com/testcontainers/testcontainers-go and modules/postgres from v0.41.0 → v0.42.0.
• Update transitive Docker client stack dependencies (notably moving from github.com/docker/docker to github.com/moby/moby/... modules).
• Refresh module metadata (go.mod/go.sum) accordingly.

Reviewed changes

Copilot reviewed 1 out of 2 changed files in this pull request and generated 2 comments.

File	Description
go.mod	Updates direct/indirect module requirements to the new Testcontainers version and updated moby-related transitive deps.
go.sum	Updates checksums to match the resolved module graph after the dependency bump and transitive migration.

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[Copilot]

github.com/swaggo/swag was promoted from an indirect dependency to a direct require, but I can’t find any Go imports of github.com/swaggo/swag in the repo (only files/gin-swagger). If this module doesn’t directly import swag, consider reverting it back to // indirect (or removing it) to keep the direct dependency set accurate; if it’s only needed for generated swagger docs, ensure go mod tidy is run after generating those files so the classification reflects actual imports.

Suggested change

	github.com/swaggo/swag v1.16.6
	github.com/swaggo/swag v1.16.6 // indirect

[Copilot]

This upgrade changes the testcontainers-go API surface used by internal/store/store_test.go (Postgres container tests). The PR description notes Docker isn’t available and the integration test wasn’t run; before merging, it would be good to run the Postgres integration test with Docker available (or ensure CI covers it) to catch any runtime/container startup behavior changes introduced by v0.42.0.