update golden locks

lib/web_ui/dev/goldens_lock.yaml

@@ -1,2 +1,2 @@
 repository: https://github.com/flutter/goldens.git
-revision: 672510dc52daa5b059081f6990582bccdb4ea48f
+revision: 7171fa6b2844b39d08aab87ca5b4e923c18e3b39

lib/web_ui/test/golden_tests/engine/gradient_golden_test.dart

@@ -130,7 +130,7 @@ void testMain() async {
     canvas.drawRect(rectBounds, borderPaint);
 
     canvas.restore();
-    await _checkScreenshot(canvas, 'sweep_gradient_rect_clamp', write: true);
+    await _checkScreenshot(canvas, 'sweep_gradient_rect_clamp');
   });
 
   test('Paints sweep gradient ovals', () async {
@@ -209,7 +209,7 @@ void testMain() async {
     canvas.drawRect(rectBounds, borderPaint);
 
     canvas.restore();
-    await _checkScreenshot(canvas, 'sweep_gradient_oval_clamp', write: true);
+    await _checkScreenshot(canvas, 'sweep_gradient_oval_clamp');
   });
 
   test('Paints sweep gradient paths', () async {
@@ -293,7 +293,7 @@ void testMain() async {
     canvas.drawRect(rectBounds, borderPaint);
 
     canvas.restore();
-    await _checkScreenshot(canvas, 'sweep_gradient_path_clamp', write: true);
+    await _checkScreenshot(canvas, 'sweep_gradient_path_clamp');
   });
 }