vendor: update buildkit

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

vendor/github.com/moby/buildkit/client/prune.go

@@ -59,10 +59,10 @@ type PruneOption interface {
 }
 
 type PruneInfo struct {
-	Filter       []string
-	All          bool
-	KeepDuration time.Duration
-	KeepBytes    int64
+	Filter       []string      `json:"filter"`
+	All          bool          `json:"all"`
+	KeepDuration time.Duration `json:"keepDuration"`
+	KeepBytes    int64         `json:"keepBytes"`
 }
 
 type pruneOptionFunc func(*PruneInfo)

vendor/github.com/moby/buildkit/client/workers.go

@@ -13,10 +13,10 @@ import (
 
 // WorkerInfo contains information about a worker
 type WorkerInfo struct {
-	ID        string
-	Labels    map[string]string
-	Platforms []ocispecs.Platform
-	GCPolicy  []PruneInfo
+	ID        string              `json:"id"`
+	Labels    map[string]string   `json:"labels"`
+	Platforms []ocispecs.Platform `json:"platforms"`
+	GCPolicy  []PruneInfo         `json:"gcPolicy"`
 }
 
 // ListWorkers lists all active workers