chore(deps): update rancher/mirrored-tonistiigi-xx docker tag to v1.6.1

[renovate-rancher]

This PR contains the following updates:

Package	Type	Update	Change
rancher/mirrored-tonistiigi-xx	stage	minor	1.5.0 -> 1.6.1

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Release Notes

tonistiigi/xx (rancher/mirrored-tonistiigi-xx)

v1.6.1

Compare Source

FROM --platform=$BUILDPLATFORM tonistiigi/xx:1.6.1 AS xx

What's Changed

• Fix additional possible xx-cc/xx-cargo compatibility issue with Alpine 3.21 https://github.com/tonistiigi/xx/pull/187

Full Changelog: tonistiigi/xx@v1.6.0...v1.6.1

v1.6.0

Compare Source

FROM --platform=$BUILDPLATFORM tonistiigi/xx:1.6.0 AS xx

What's Changed

• Support for Alpine 3.21 https://github.com/tonistiigi/xx/pull/174
• Fix xx-verify with file 5.46+ https://github.com/tonistiigi/xx/pull/174
• Fix possible error taking lock in xx-apk in latest Alpine without coreutils https://github.com/tonistiigi/xx/pull/185

Full Changelog: tonistiigi/xx@v1.5.0...v1.6.0

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