[flutter_releases] Roll engine to 2b6125fb (#103999)

diff --git a/bin/internal/engine.version b/bin/internal/engine.version
index cf0f8d0..6c8fc51 100644
--- a/bin/internal/engine.version
+++ b/bin/internal/engine.version
@@ -1 +1 @@
-19d5f037f221dde7019977b2bacbe12876779b9d
+2b6125fb47140bdba8b1debe37be90955fb0eb4b