Bump version

Bump version to 1.5.2 due to the changes needed to handle the new way to treat ACID signatures on Atmosphère 1.7.1

Makefile

@@ -2,7 +2,7 @@ MAKEFILES	:=	sysmod overlay
 TARGETS		:= $(foreach dir,$(MAKEFILES),$(CURDIR)/$(dir))
 
 # the below was taken from atmosphere + switch-examples makefile
-export VERSION := 1.5.1
+export VERSION := 1.5.2
 
 ifneq ($(strip $(shell git symbolic-ref --short HEAD 2>/dev/null)),)
 export GIT_BRANCH := $(shell git symbolic-ref --short HEAD)