build(deps): bump github.com/moby/buildkit from 0.8.1 to 0.8.2

Bumps [github.com/moby/buildkit](https://github.com/moby/buildkit) from 0.8.1 to 0.8.2.
- [Release notes](https://github.com/moby/buildkit/releases)
- [Commits](https://github.com/moby/buildkit/compare/v0.8.1...v0.8.2)

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

go.mod

@@ -6,11 +6,11 @@ require (
 	cuelang.org/go v0.3.0-beta.5
 	github.com/KromDaniel/jonson v0.0.0-20180630143114-d2f9c3c389db
 	github.com/containerd/console v1.0.1
-	github.com/docker/distribution v2.7.1+incompatible // indirect
+	github.com/docker/distribution v2.7.1+incompatible
 	github.com/emicklei/proto v1.9.0 // indirect
 	github.com/jaguilar/vt100 v0.0.0-20150826170717-2703a27b14ea
 	github.com/mitchellh/colorstring v0.0.0-20190213212951-d06e56a500db
-	github.com/moby/buildkit v0.8.1
+	github.com/moby/buildkit v0.8.2
 	github.com/morikuni/aec v1.0.0
 	github.com/opencontainers/go-digest v1.0.0
 	github.com/rs/zerolog v1.20.0