build(deps): bump github.com/moby/buildkit from 0.10.2 to 0.10.3 (#1153)

Bumps [github.com/moby/buildkit](https://github.com/moby/buildkit) from 0.10.2 to 0.10.3.
- [Release notes](https://github.com/moby/buildkit/releases)
- [Commits](https://github.com/moby/buildkit/compare/v0.10.2...v0.10.3)

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

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>

go.mod

@@ -17,7 +17,7 @@ require (
 	github.com/kballard/go-shellquote v0.0.0-20180428030007-95032a82bc51
 	github.com/mattn/go-isatty v0.0.14
 	github.com/mitchellh/go-homedir v1.1.0
-	github.com/moby/buildkit v0.10.2
+	github.com/moby/buildkit v0.10.3
 	github.com/opencontainers/image-spec v1.0.3-0.20211202183452-c5a74bcca799
 	github.com/opencontainers/selinux v1.10.1
 	github.com/pkg/errors v0.9.1