Update Engine revision to 7b8906637ffd2b4cfde561f40a6f4eaab6bade13 for beta release 3.7.0-1.3.pre (#118000)

diff --git a/bin/internal/engine.version b/bin/internal/engine.version
index fe2095a..d796b7f 100644
--- a/bin/internal/engine.version
+++ b/bin/internal/engine.version
@@ -1 +1 @@
-8c99b0feaf9715af490612f00954c6a76374a907
+7b8906637ffd2b4cfde561f40a6f4eaab6bade13