Merge pull request docker#2886 from thaJeztah/bump_buildkit

vendor: BuildKit v0.8.1, Engine v20.10.1

Author: tiborvass

vendor.conf

@@ -14,7 +14,7 @@ github.com/creack/pty                               2a38352e8b4d7ab6c336eef107e4
 github.com/davecgh/go-spew                          8991bc29aa16c548c550c7ff78260e27b9ab7c73 # v1.1.1
 github.com/docker/compose-on-kubernetes             78e6a00beda64ac8ccb9fec787e601fe2ce0d5bb # v0.5.0-alpha1
 github.com/docker/distribution                      0d3efadf0154c2b8a4e7b6621fff9809655cc580
-github.com/docker/docker                            cf31b9622ae9de4b5fb7a1c9456460980ab80281 # master (v20.10.0-dev)
+github.com/docker/docker                            f0014860c1b3345e1fcc7ed81c491298de2633fb # v20.10.1
 github.com/docker/docker-credential-helpers         54f0238b6bf101fc3ad3b34114cb5520beb562f5 # v0.6.3
 github.com/docker/go                                d30aec9fd63c35133f8f79c3412ad91a3b08be06 # Contains a customized version of canonical/json and is used by Notary. The package is periodically rebased on current Go versions.
 github.com/docker/go-connections                    7395e3f8aa162843a74ed6d48e79627d9792ac55 # v0.4.0
@@ -48,7 +48,7 @@ github.com/Microsoft/go-winio                       5b44b70ab3ab4d291a7c1d28afe7
 github.com/Microsoft/hcsshim                        5bc557dd210ff2caf615e6e22d398123de77fc11 # v0.8.9
 github.com/miekg/pkcs11                             210dc1e16747c5ba98a03bcbcf728c38086ea357 # v1.0.3
 github.com/mitchellh/mapstructure                   d16e9488127408e67948eb43b6d3fbb9f222da10 # v1.3.2
-github.com/moby/buildkit                            73fe4736135645a342abc7b587bba0994cccf0f9 # v0.8.0
+github.com/moby/buildkit                            8142d66b5ebde79846b869fba30d9d30633e74aa # v0.8.1
 github.com/moby/sys                                 1bc8673b57550ddf85262eb0fed0aac651a37dab # symlink/v0.1.0 (latest tag, either mount/vXXX, mountinfo/vXXX or symlink/vXXX)
 github.com/moby/term                                bea5bbe245bf407372d477f1361d2ff042d2f556
 github.com/modern-go/concurrent                     bacd9c7ef1dd9b15be4a9909b8ac7a4e313eec94 # 1.0.3