vendor: update moby/buildkit

Update modules:

  go mod edit -require github.com/moby/buildkit@master
  go mod tidy -compat=1.17 && ./hack/update-vendor

Signed-off-by: Justin Chadwell <me@jedevc.com>

vendor/github.com/moby/buildkit/session/filesync/filesync.go

@@ -36,7 +36,7 @@ type SyncedDir struct {
 	Name     string
 	Dir      string
 	Excludes []string
-	Map      func(string, *fstypes.Stat) bool
+	Map      func(string, *fstypes.Stat) fsutil.MapResult
 }
 
 // NewFSSyncProvider creates a new provider for sending files from client

vendor/github.com/moby/buildkit/session/manager.go

@@ -160,12 +160,10 @@ func (sm *Manager) Get(ctx context.Context, id string, noWait bool) (Caller, err
 	defer cancel()
 
 	go func() {
-		select {
-		case <-ctx.Done():
-			sm.mu.Lock()
-			sm.updateCondition.Broadcast()
-			sm.mu.Unlock()
-		}
+		<-ctx.Done()
+		sm.mu.Lock()
+		sm.updateCondition.Broadcast()
+		sm.mu.Unlock()
 	}()
 
 	var c *client