Update engine revision to pull in revert of the patches that caused LLDB to be overwhelmed. (#4993)

bin/cache/engine.version

diff --git a/bin/cache/engine.version b/bin/cache/engine.version
index 8cc0e1a..2b8c1a5 100644
--- a/bin/cache/engine.version
+++ b/bin/cache/engine.version
@@ -1 +1 @@
-5ed6b6ec265b51b596e3b3b0600b9b6d8c5668ac
+b164edaea8def1f962ad33ffdc95796f18ab279f