chore(deps): bump github.com/moby/buildkit from 0.18.0 to 0.18.1

Bumps [github.com/moby/buildkit](https://github.com/moby/buildkit) from 0.18.0 to 0.18.1.
- [Release notes](https://github.com/moby/buildkit/releases)
- [Commits](moby/buildkit@v0.18.0...v0.18.1)

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

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

go.mod

@@ -28,7 +28,7 @@ require (
 	github.com/liamg/tml v0.7.0
 	github.com/mailru/easyjson v0.7.7 // indirect
 	github.com/mitchellh/go-wordwrap v1.0.1 // indirect
-	github.com/moby/buildkit v0.18.0
+	github.com/moby/buildkit v0.18.1
 	github.com/moby/term v0.5.0 // indirect
 	github.com/morikuni/aec v1.0.0 // indirect
 	github.com/opencontainers/image-spec v1.1.0 // indirect

go.sum

@@ -298,8 +298,8 @@ github.com/mattn/go-isatty v0.0.8/go.mod h1:Iq45c/XA43vh69/j3iqttzPXn0bhXyGjM0Hd
 github.com/mgutz/ansi v0.0.0-20170206155736-9520e82c474b/go.mod h1:01TrycV0kFyexm33Z7vhZRXopbI8J3TDReVlkTgMUxE=
 github.com/mitchellh/go-wordwrap v1.0.1 h1:TLuKupo69TCn6TQSyGxwI1EblZZEsQ0vMlAFQflz0v0=
 github.com/mitchellh/go-wordwrap v1.0.1/go.mod h1:R62XHJLzvMFRBbcrT7m7WgmE1eOyTSsCt+hzestvNj0=
-github.com/moby/buildkit v0.18.0 h1:KSelhNINJcNA3FCWBbGCytvicjP+kjU5kZlZhkTUkVo=
-github.com/moby/buildkit v0.18.0/go.mod h1:vCR5CX8NGsPTthTg681+9kdmfvkvqJBXEv71GZe5msU=
+github.com/moby/buildkit v0.18.1 h1:Iwrz2F/Za2Gjkpwu3aM2LX92AFfJCJe2oNnvGNvh2Rc=
+github.com/moby/buildkit v0.18.1/go.mod h1:vCR5CX8NGsPTthTg681+9kdmfvkvqJBXEv71GZe5msU=
 github.com/moby/docker-image-spec v1.3.1 h1:jMKff3w6PgbfSa69GfNg+zN/XLhfXJGnEx3Nl2EsFP0=
 github.com/moby/docker-image-spec v1.3.1/go.mod h1:eKmb5VW8vQEh/BAr2yvVNvuiJuY6UIocYsFu/DxxRpo=
 github.com/moby/locker v1.0.1 h1:fOXqR41zeveg4fFODix+1Ch4mj/gT0NE1XJbp/epuBg=