gmp: update to 6.3

Release Notes:
https://gmplib.org/gmp6.3

Signed-off-by: Nick Hainke <[email protected]>

package/libs/gmp/Makefile

@@ -8,12 +8,12 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=gmp
-PKG_VERSION:=6.2.1
+PKG_VERSION:=6.3.0
 PKG_RELEASE:=1
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION)$(PKG_REVISION).tar.xz
 PKG_SOURCE_URL:=@GNU/gmp/
-PKG_HASH:=fd4829912cddd12f84181c3451cc752be224643e87fac497b69edddadc49b4f2
+PKG_HASH:=a3c2b80201b89e68616f4ad30bc66aee4927c3ce50e33929ca819d5c43538898
 
 PKG_BUILD_PARALLEL:=1
 PKG_INSTALL:=1