Bump github.com/docker/buildx from 0.8.1 to 0.8.2

Bumps [github.com/docker/buildx](https://github.com/docker/buildx) from 0.8.1 to 0.8.2.
- [Release notes](https://github.com/docker/buildx/releases)
- [Commits](docker/buildx@v0.8.1...v0.8.2)

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

Signed-off-by: dependabot[bot] <[email protected]>

go.mod

@@ -10,7 +10,7 @@ require (
 	github.com/containerd/console v1.0.3
 	github.com/containerd/containerd v1.6.2
 	github.com/distribution/distribution/v3 v3.0.0-20210316161203-a01c71e2477e
-	github.com/docker/buildx v0.8.1 // when updating, also update the replace rules accordingly
+	github.com/docker/buildx v0.8.2 // when updating, also update the replace rules accordingly
 	github.com/docker/cli v20.10.12+incompatible
 	github.com/docker/cli-docs-tool v0.4.0
 	github.com/docker/docker v20.10.7+incompatible
@@ -21,7 +21,7 @@ require (
 	github.com/hashicorp/go-version v1.3.0
 	github.com/mattn/go-isatty v0.0.14
 	github.com/mattn/go-shellwords v1.0.12
-	github.com/moby/buildkit v0.10.0-rc2.0.20220308185020-fdecd0ae108b
+	github.com/moby/buildkit v0.10.1-0.20220403220257-10e6f94bf90d
 	github.com/moby/term v0.0.0-20210619224110-3f7ff695adc6
 	github.com/morikuni/aec v1.0.0
 	github.com/opencontainers/go-digest v1.0.0
@@ -32,7 +32,7 @@ require (
 	github.com/spf13/cobra v1.4.0
 	github.com/spf13/pflag v1.0.5
 	github.com/stretchr/testify v1.7.0
-	github.com/theupdateframework/notary v0.6.1
+	github.com/theupdateframework/notary v0.7.0
 	golang.org/x/sync v0.0.0-20210220032951-036812b2e83c
 	gotest.tools v2.2.0+incompatible
 	gotest.tools/v3 v3.2.0
@@ -42,7 +42,6 @@ require (
 	github.com/Azure/go-ansiterm v0.0.0-20210617225240-d185dfc1b5a1 // indirect
 	github.com/Masterminds/semver v1.5.0 // indirect
 	github.com/Microsoft/go-winio v0.5.1 // indirect
-	github.com/agl/ed25519 v0.0.0-20170116200512-5312a6153412 // indirect
 	github.com/beorn7/perks v1.0.1 // indirect
 	github.com/cespare/xxhash/v2 v2.1.2 // indirect
 	github.com/cnabio/cnab-go v0.10.0-beta1 // indirect