Update buck version to same as Gerrit

Change-Id: I211892cdde420ba774baae775e8c3a7f87502e82
diff --git a/buckversion b/buckversion
index b37000e..9c09744 100644
--- a/buckversion
+++ b/buckversion
@@ -1 +1 @@
-c60dc12b3280d19dc9e531b137e911c95760fc8f
+79d36de9f5284f6e833cca81867d6088a25685fb