vendor: update buildkit to v0.19.0-rc1

Signed-off-by: Tonis Tiigi <tonistiigi@gmail.com>

vendor/k8s.io/api/coordination/v1beta1/zz_generated.deepcopy.go

@@ -22,6 +22,7 @@ limitations under the License.
 package v1beta1
 
 import (
+	v1 "k8s.io/api/coordination/v1"
 	runtime "k8s.io/apimachinery/pkg/runtime"
 )
 
@@ -111,6 +112,16 @@ func (in *LeaseSpec) DeepCopyInto(out *LeaseSpec) {
 		*out = new(int32)
 		**out = **in
 	}
+	if in.Strategy != nil {
+		in, out := &in.Strategy, &out.Strategy
+		*out = new(v1.CoordinatedLeaseStrategy)
+		**out = **in
+	}
+	if in.PreferredHolder != nil {
+		in, out := &in.PreferredHolder, &out.PreferredHolder
+		*out = new(string)
+		**out = **in
+	}
 	return
 }