[flutter_releases] Roll engine to 1efe6a3 (#103157)

diff --git a/bin/internal/engine.version b/bin/internal/engine.version
index b7b5241..7b0a66b 100644
--- a/bin/internal/engine.version
+++ b/bin/internal/engine.version
@@ -1 +1 @@
-2c34820e44151fcf81212a7dc26b93952ac4d81c
+1efe6a39f3107084241595fd31fad4caf1db78ad