Bump engine version for 3.38.5 (#179743)

with bin/internal/last_engine_commit.sh > bin/internal/engine.version
diff --git a/bin/internal/engine.version b/bin/internal/engine.version
index 94d7783..f0eb004 100644
--- a/bin/internal/engine.version
+++ b/bin/internal/engine.version
@@ -1 +1 @@
-a5cb96369ef86c7e85abf5d662a1ca5d89775053
+1527ae0ec577a4ef50e65f6fefcfc1326707d9bf