Bump github.com/moby/buildkit from 0.8.2 to 0.8.3 (#354)

* Bump github.com/moby/buildkit from 0.8.2 to 0.8.3

Bumps [github.com/moby/buildkit](https://github.com/moby/buildkit) from 0.8.2 to 0.8.3.
- [Release notes](https://github.com/moby/buildkit/releases)
- [Commits](https://github.com/moby/buildkit/compare/v0.8.2...v0.8.3)

Signed-off-by: dependabot[bot] <support@github.com>

* Update go modules

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: CrazyMax <crazy-max@users.noreply.github.com>

go.mod

@@ -21,7 +21,7 @@ require (
 	github.com/matcornic/hermes/v2 v2.1.0
 	github.com/matrix-org/gomatrix v0.0.0-20200501121722-e5578b12c752
 	github.com/microcosm-cc/bluemonday v1.0.9
-	github.com/moby/buildkit v0.8.2
+	github.com/moby/buildkit v0.8.3
 	github.com/moby/term v0.0.0-20201216013528-df9cb8a40635 // indirect
 	github.com/nlopes/slack v0.6.0
 	github.com/opencontainers/go-digest v1.0.0

go.sum

@@ -1118,8 +1118,8 @@ github.com/mitchellh/mapstructure v1.3.1 h1:cCBH2gTD2K0OtLlv/Y5H01VQCqmlDxz30kS5
 github.com/mitchellh/mapstructure v1.3.1/go.mod h1:bFUtVrKA4DC2yAKiSyO/QUcy7e+RRV2QTWOzhPopBRo=
 github.com/mitchellh/osext v0.0.0-20151018003038-5e2d6d41470f h1:2+myh5ml7lgEU/51gbeLHfKGNfgEQQIWrlbdaOsidbQ=
 github.com/mitchellh/osext v0.0.0-20151018003038-5e2d6d41470f/go.mod h1:OkQIRizQZAeMln+1tSwduZz7+Af5oFlKirV/MSYes2A=
-github.com/moby/buildkit v0.8.2 h1:kvb0cLWss4mOhCxcXSTENzzA+t1JR1eIyXFhDrI+73g=
-github.com/moby/buildkit v0.8.2/go.mod h1:5PZi7ALzuxG604ggYSeN+rzC+CyJscuXS7WetulJr1Y=
+github.com/moby/buildkit v0.8.3 h1:vFlwUQ6BZE1loZ8zoZH3fYgmA1djFCS3DrOhCVU6ZZE=
+github.com/moby/buildkit v0.8.3/go.mod h1:jUezwyOvKdkbcvR66WuKzPYQUO3sQ8i/eChLZ7kEmg8=
 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/sys/mount v0.1.0/go.mod h1:FVQFLDRWwyBjDTBNQXDlWnSFREqOo3OKX9aqhmeoo74=