deps: Upgrade to webrender@0.66 (#35325)

In addition to some small API changes, this downstream version of
WebRender no longer depends on a very old version of time. This is the
last step toward removing the dependency on `time0.1`.

The review for this commit should also include: 9f552bebab

Signed-off-by: Martin Robinson <mrobinson@igalia.com>

components/layout_2020/display_list/stacking_context.rs

@@ -565,6 +565,7 @@ impl StackingContext {
             &[], // filter_primitives
             wr::RasterSpace::Screen,
             wr::StackingContextFlags::empty(),
+            None, // snapshot
         );
 
         true