Update module golang.org/x/sync to v0.9.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
golang.org/x/sync	v0.8.0 -> v0.9.0

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Configuration

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

🚦 Automerge: Enabled.

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

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This PR was generated by Mend Renovate. View the repository job log.

[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: dagger/go.sum

Command failed: go get -d -t ./...
go: -d flag is deprecated. -d=true is a no-op
go: dagger/machineshop imports
	dagger/machineshop/internal/dagger: package dagger/machineshop/internal/dagger is not in std (/opt/containerbase/tools/golang/1.23.3/src/dagger/machineshop/internal/dagger)

[renovate]

Renovate Ignore Notification

Because you closed this PR without merging, Renovate will ignore this update (v0.9.0). You will get a PR once a newer version is released. To ignore this dependency forever, add it to the ignoreDeps array of your Renovate config.

If you accidentally closed this PR, or if you changed your mind: rename this PR to get a fresh replacement PR.