vendor: update buildkit to 862b22d7

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

vendor/github.com/moby/buildkit/cmd/buildkitd/config/config.go

@@ -24,6 +24,8 @@ type Config struct {
 	Registries map[string]resolverconfig.RegistryConfig `toml:"registry"`
 
 	DNS *DNSConfig `toml:"dns"`
+
+	History *HistoryConfig `toml:"history"`
 }
 
 type GRPCConfig struct {
@@ -123,3 +125,8 @@ type DNSConfig struct {
 	Options       []string `toml:"options"`
 	SearchDomains []string `toml:"searchDomains"`
 }
+
+type HistoryConfig struct {
+	MaxAge     int64 `toml:"maxAge"`
+	MaxEntries int64 `toml:"maxEntries"`
+}