Switch chainguard images to alternative Alpine-based images #3449
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Changes
On July 15, 2024, Chainguard will be changing their base images to be based on their own custom Wolfi base. This means they will be dropping support for a number of platforms, keeping only linux/arm64 and linux/amd64.
Switch to their alternative Alpine-based images to maintain support for other platforms such as linux/s390x and linux/ppc64le.
See https://www.chainguard.dev/unchained/changes-to-static-git-and-busybox-developer-images-2 for more details.
/kind misc
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