vendor: update buildkit to 8effd45b

Signed-off-by: Tonis Tiigi <tonistiigi@gmail.com>

go.mod

@@ -10,20 +10,20 @@ require (
 	github.com/cenkalti/backoff v2.1.1+incompatible // indirect
 	github.com/cloudflare/cfssl v0.0.0-20181213083726-b94e044bb51e // indirect
 	github.com/containerd/console v1.0.1
-	github.com/containerd/containerd v1.4.1-0.20201117152358-0edc412565dc
+	github.com/containerd/containerd v1.5.0-beta.3.0.20210309150730-ddf6594fbeed
 	github.com/denisenkom/go-mssqldb v0.0.0-20190315220205-a8ed825ac853 // indirect
 	github.com/docker/cli v20.10.3-0.20210127070556-d26bdfd4ea23+incompatible
 	github.com/docker/compose-on-kubernetes v0.4.19-0.20190128150448-356b2919c496 // indirect
 	github.com/docker/distribution v2.7.1+incompatible
 	github.com/docker/docker v20.10.0-beta1.0.20201110211921-af34b94a78a1+incompatible
 	github.com/docker/docker-credential-helpers v0.6.4-0.20210125172408-38bea2ce277a // indirect
 	github.com/docker/go v1.5.1-1.0.20160303222718-d30aec9fd63c // indirect
-	github.com/docker/go-metrics v0.0.1 // indirect
 	github.com/docker/libtrust v0.0.0-20150526203908-9cbd2a1374f4 // indirect
 	github.com/docker/spdystream v0.0.0-20181023171402-6480d4af844c // indirect
 	github.com/elazarl/goproxy v0.0.0-20191011121108-aa519ddbe484 // indirect
 	github.com/erikstmartin/go-testdb v0.0.0-20160219214506-8d10e4a1bae5 // indirect
 	github.com/fvbommel/sortorder v1.0.1 // indirect
+	github.com/go-sql-driver/mysql v1.5.0 // indirect
 	github.com/gofrs/flock v0.7.3
 	github.com/gofrs/uuid v3.3.0+incompatible // indirect
 	github.com/google/certificate-transparency-go v1.0.21 // indirect
@@ -35,29 +35,28 @@ require (
 	github.com/jinzhu/inflection v0.0.0-20180308033659-04140366298a // indirect
 	github.com/jinzhu/now v1.0.0 // indirect
 	github.com/kardianos/osext v0.0.0-20190222173326-2bc1f35cddc0 // indirect
+	github.com/lib/pq v1.10.0 // indirect
 	github.com/mattn/go-sqlite3 v1.10.0 // indirect
-	github.com/miekg/pkcs11 v0.0.0-20190322140431-074fd7a1ed19 // indirect
-	github.com/moby/buildkit v0.8.1-0.20201205083753-0af7b1b9c693
+	github.com/moby/buildkit v0.8.2-0.20210322063634-8effd45b99b8
 	github.com/opencontainers/go-digest v1.0.0
 	github.com/opencontainers/image-spec v1.0.1
 	github.com/pkg/errors v0.9.1
-	github.com/prometheus/client_golang v1.7.1 // indirect
 	github.com/serialx/hashring v0.0.0-20190422032157-8b2912629002
 	github.com/sirupsen/logrus v1.7.0
 	github.com/spf13/cobra v1.1.1
 	github.com/spf13/pflag v1.0.5
-	github.com/stretchr/testify v1.5.1
+	github.com/stretchr/testify v1.7.0
 	github.com/theupdateframework/notary v0.6.1 // indirect
 	github.com/tonistiigi/units v0.0.0-20180711220420-6950e57a87ea
 	github.com/xeipuuv/gojsonschema v1.2.0 // indirect
 	github.com/zclconf/go-cty v1.7.1
-	golang.org/x/sync v0.0.0-20201020160332-67f06af15bc9
+	golang.org/x/sync v0.0.0-20201207232520-09787c993a3a
 	gopkg.in/dancannon/gorethink.v3 v3.0.5 // indirect
 	gopkg.in/fatih/pool.v2 v2.0.0 // indirect
 	gopkg.in/gorethink/gorethink.v3 v3.0.5 // indirect
-	k8s.io/api v0.19.0
-	k8s.io/apimachinery v0.19.0
-	k8s.io/client-go v0.19.0
+	k8s.io/api v0.20.1
+	k8s.io/apimachinery v0.20.1
+	k8s.io/client-go v0.20.1
 )
 
 replace (