vendor: update buildkit to v0.14.0-rc1

Update buildkit dependency to v0.14.0-rc1. Update the tracing
infrastructure to use the new detect API which updates how the delegated
exporter is configured.

Signed-off-by: Jonathan A. Sternberg <jonathan.sternberg@docker.com>

vendor/github.com/tonistiigi/vt100/vt100.go

@@ -200,6 +200,7 @@ func (v *VT100) Resize(y, x int) {
 		v.Height = y
 	} else if y < v.Height {
 		v.Content = v.Content[:y]
+		v.Format = v.Format[:y]
 		v.Height = y
 	}