build(deps): bump github.com/docker/buildx from 0.6.0 to 0.6.1

Bumps [github.com/docker/buildx](https://github.com/docker/buildx) from 0.6.0 to 0.6.1.
- [Release notes](https://github.com/docker/buildx/releases)
- [Commits](https://github.com/docker/buildx/compare/v0.6.0...v0.6.1)

---
updated-dependencies:
- dependency-name: github.com/docker/buildx
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

go.mod

@@ -7,7 +7,7 @@ require (
 	filippo.io/age v1.0.0-rc.3
 	github.com/KromDaniel/jonson v0.0.0-20180630143114-d2f9c3c389db
 	github.com/containerd/console v1.0.2
-	github.com/docker/buildx v0.6.0
+	github.com/docker/buildx v0.6.1
 	github.com/docker/distribution v2.7.1+incompatible
 	github.com/emicklei/proto v1.9.0 // indirect
 	github.com/go-git/go-git/v5 v5.4.2