'Update Engine revision to 486f4a749e532b865d5d24990d865f7d902b8fb3 for beta release 2.12.0-4.2.pre' (#100922)

diff --git a/bin/internal/engine.version b/bin/internal/engine.version
index 7f4270a..3a9ceb3 100644
--- a/bin/internal/engine.version
+++ b/bin/internal/engine.version
@@ -1 +1 @@
-e9f57b5d0f56ea3288c7206f56717ca19ffe5358
+486f4a749e532b865d5d24990d865f7d902b8fb3