Bump buildkit to master and fix versions incompatible with go mod 1.13

Bump github.com/gogo/googleapis to v1.3.2
Bump github.com/docker/cli to master

Signed-off-by: Silvin Lubecki <silvin.lubecki@docker.com>

vendor/sigs.k8s.io/yaml/OWNERS

@@ -0,0 +1,25 @@
+approvers:
+- dims
+- lavalamp
+- smarterclayton
+- deads2k
+- sttts
+- liggitt
+- caesarxuchao
+reviewers:
+- dims
+- thockin
+- lavalamp
+- smarterclayton
+- wojtek-t
+- deads2k
+- derekwaynecarr
+- caesarxuchao
+- mikedanese
+- liggitt
+- gmarek
+- sttts
+- ncdc
+- tallclair
+labels:
+- sig/api-machinery