build(deps): 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>
Signed-off-by: Andrea Luzzardi <aluzzardi@gmail.com>

go.sum

@@ -730,8 +730,8 @@ 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/go.mod h1:OkQIRizQZAeMln+1tSwduZz7+Af5oFlKirV/MSYes2A=
 github.com/mitchellh/reflectwalk v1.0.0/go.mod h1:mSTlrgnPZtwu0c4WaC2kGObEpuNDbx0jmZXqmk4esnw=
-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=