Update version to 2.11.5

Author: adityadani

Makefile

@@ -18,7 +18,7 @@ ifeq ($(BUILD_TYPE),debug)
 BUILDFLAGS += -gcflags "-N -l"
 endif
 
-RELEASE_VER := 2.11.4
+RELEASE_VER := 2.11.5
 BASE_DIR    := $(shell git rev-parse --show-toplevel)
 GIT_SHA     := $(shell git rev-parse --short HEAD)
 BIN         :=$(BASE_DIR)/bin