Update dependency ko-build/ko to v0.15.1

[renovate]

This PR contains the following updates:

Package	Update	Change
ko-build/ko	patch	v0.15.0 -> v0.15.1

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Release Notes

ko-build/ko (ko-build/ko)

v0.15.1

Compare Source

What's Changed

• Don't AppendDescriptor until we've written config by @​jonjohnsonjr in https://github.com/ko-build/ko/pull/1175
• Add more locking around on-disk image cache by @​jonjohnsonjr in https://github.com/ko-build/ko/pull/1176
• Fix "AM" Time Typo by @​StephenGrider in https://github.com/ko-build/ko/pull/1179
• docs: add MacPorts install info by @​herbygillot in https://github.com/ko-build/ko/pull/1180

New Contributors

• @​StephenGrider made their first contribution in https://github.com/ko-build/ko/pull/1179
• @​herbygillot made their first contribution in https://github.com/ko-build/ko/pull/1180

Full Changelog: ko-build/ko@v0.15.0...v0.15.1

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