build(deps): bump github.com/moby/buildkit

Bumps [github.com/moby/buildkit](https://github.com/moby/buildkit) from 0.12.1-0.20230717122532-faa0cc7da353 to 0.12.1.
- [Release notes](https://github.com/moby/buildkit/releases)
- [Commits](https://github.com/moby/buildkit/commits/v0.12.1)

---
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

@@ -24,7 +24,7 @@ require (
 	github.com/jonboulle/clockwork v0.4.0
 	github.com/mattn/go-shellwords v1.0.12
 	github.com/mitchellh/mapstructure v1.5.0
-	github.com/moby/buildkit v0.12.1-0.20230717122532-faa0cc7da353 // v0.12 release branch
+	github.com/moby/buildkit v0.12.1 // v0.12 release branch
 	github.com/moby/patternmatcher v0.5.0
 	github.com/moby/term v0.5.0
 	github.com/morikuni/aec v1.0.0

go.sum

@@ -491,8 +491,8 @@ github.com/miekg/pkcs11 v1.1.1/go.mod h1:XsNlhZGX73bx86s2hdc/FuaLm2CPZJemRLMA+WT
 github.com/mitchellh/mapstructure v0.0.0-20150613213606-2caf8efc9366/go.mod h1:FVVH3fgwuzCH5S8UJGiWEs2h04kUh9fWfEaFds41c1Y=
 github.com/mitchellh/mapstructure v1.5.0 h1:jeMsZIYE/09sWLaz43PL7Gy6RuMjD2eJVyuac5Z2hdY=
 github.com/mitchellh/mapstructure v1.5.0/go.mod h1:bFUtVrKA4DC2yAKiSyO/QUcy7e+RRV2QTWOzhPopBRo=
-github.com/moby/buildkit v0.12.1-0.20230717122532-faa0cc7da353 h1:/ZIwqvOF3QKObJbjX96xVvAKtnWdw/AuEqysbbujaZA=
-github.com/moby/buildkit v0.12.1-0.20230717122532-faa0cc7da353/go.mod h1:+n9GmkxwBCjVz4u7wmiyh+oqvjIjQM+1zk3iJrWfdos=
+github.com/moby/buildkit v0.12.1 h1:vvMG7EZYCiQZpTtXQkvyeyj7HzT1JHhDWj+/aiGIzLM=
+github.com/moby/buildkit v0.12.1/go.mod h1:adB4y0SxxX8trnrY+oEulb48ODLqPO6pKMF0ppGcCoI=
 github.com/moby/locker v1.0.1 h1:fOXqR41zeveg4fFODix+1Ch4mj/gT0NE1XJbp/epuBg=
 github.com/moby/locker v1.0.1/go.mod h1:S7SDdo5zpBK84bzzVlKr2V0hz+7x9hWbYC/kq7oQppc=
 github.com/moby/patternmatcher v0.5.0 h1:YCZgJOeULcxLw1Q+sVR636pmS7sPEn1Qo2iAN6M7DBo=