Title: [logdevice] Cutting version 2.46.4

Summary:
Change log for 2.46.4:
  D17978655 [logdevice][Important] Fixing LCM startup correctness after D17824825

fbshipit-source-id: a7cccae7e250f0e319a6b7131f593c5c5e37c1b6

Author: jainafb

logdevice/common/version.h

@@ -8,4 +8,4 @@
 #pragma once
 
 // This should be updated when cutting a release branch.
-#define LOGDEVICE_VERSION "2.46.3"
+#define LOGDEVICE_VERSION "2.46.4"