88e61d8bd Remove references to Observatory (flutter/engine#38919) (#118793)

diff --git a/bin/internal/engine.version b/bin/internal/engine.version
index ca1d061..33cc622 100644
--- a/bin/internal/engine.version
+++ b/bin/internal/engine.version
@@ -1 +1 @@
-40f7f0f09976357cde2fbde746d9995337499f55
+88e61d8bd166a0f4c6d5387ddc2df95f2ff1359b