vendor: update buildkit

Signed-off-by: CrazyMax <crazy-max@users.noreply.github.com>

vendor/google.golang.org/grpc/stream.go

@@ -39,6 +39,7 @@ import (
 	imetadata "google.golang.org/grpc/internal/metadata"
 	iresolver "google.golang.org/grpc/internal/resolver"
 	"google.golang.org/grpc/internal/serviceconfig"
+	istatus "google.golang.org/grpc/internal/status"
 	"google.golang.org/grpc/internal/transport"
 	"google.golang.org/grpc/metadata"
 	"google.golang.org/grpc/peer"
@@ -195,6 +196,13 @@ func newClientStream(ctx context.Context, desc *StreamDesc, cc *ClientConn, meth
 	rpcInfo := iresolver.RPCInfo{Context: ctx, Method: method}
 	rpcConfig, err := cc.safeConfigSelector.SelectConfig(rpcInfo)
 	if err != nil {
+		if st, ok := status.FromError(err); ok {
+			// Restrict the code to the list allowed by gRFC A54.
+			if istatus.IsRestrictedControlPlaneCode(st) {
+				err = status.Errorf(codes.Internal, "config selector returned illegal status: %v", err)
+			}
+			return nil, err
+		}
 		return nil, toRPCErr(err)
 	}
 
@@ -744,17 +752,25 @@ func (cs *clientStream) withRetry(op func(a *csAttempt) error, onSuccess func())
 
 func (cs *clientStream) Header() (metadata.MD, error) {
 	var m metadata.MD
+	noHeader := false
 	err := cs.withRetry(func(a *csAttempt) error {
 		var err error
 		m, err = a.s.Header()
+		if err == transport.ErrNoHeaders {
+			noHeader = true
+			return nil
+		}
 		return toRPCErr(err)
 	}, cs.commitAttemptLocked)
+
 	if err != nil {
 		cs.finish(err)
 		return nil, err
 	}
-	if len(cs.binlogs) != 0 && !cs.serverHeaderBinlogged {
-		// Only log if binary log is on and header has not been logged.
+
+	if len(cs.binlogs) != 0 && !cs.serverHeaderBinlogged && !noHeader {
+		// Only log if binary log is on and header has not been logged, and
+		// there is actually headers to log.
 		logEntry := &binarylog.ServerHeader{
 			OnClientSide: true,
 			Header:       m,