Bump github.com/moby/buildkit from 0.19.0 to 0.21.1#149

dependabot[bot] wants to merge 1 commit intomasterkeilerkonzept/dockerfile-json:masterfrom

dependabot/go_modules/github.com/moby/buildkit-0.21.1keilerkonzept/dockerfile-json:dependabot/go_modules/github.com/moby/buildkit-0.21.1Copy head branch name to clipboard