Roll engine to 9b297b3b51228... and Update goldens for flutter/engine#6184 (#21519)

* Update goldens for flutter/engine#6184

* Roll engine to 9b297b3b51228...
diff --git a/bin/internal/engine.version b/bin/internal/engine.version
index 5fe7430..77e9bd7 100644
--- a/bin/internal/engine.version
+++ b/bin/internal/engine.version
@@ -1 +1 @@
-5f61056946efa1380f87c402f960be9e7b19cdc4
+9b297b3b51228d5009b47a09cc7c8e9774877f5e
diff --git a/bin/internal/goldens.version b/bin/internal/goldens.version
index f0887d0..4971511 100644
--- a/bin/internal/goldens.version
+++ b/bin/internal/goldens.version
@@ -1 +1 @@
-157b8cebd10c8f8308540ded5dadae502febd48d
+555a2f96848c31b8c0303555535d6b5e20686e6e