package/sdl2_ttf: bump version to 2.24.0

For release note, see:
https://github.com/libsdl-org/SDL_ttf/releases/tag/release-2.24.0

This commit also updates the license hash, after year update in:
https://github.com/libsdl-org/SDL_ttf/commit/cf8e187373413fcb15a812966f7342e90f5610b3

Signed-off-by: Peter Macleod Thompson <peter.macleod.thompson@gmail.com>
[Julien: add link to release note and comment about licence hash change]
Signed-off-by: Julien Olivain <ju.o@free.fr>

package/sdl2_ttf/sdl2_ttf.hash

@@ -1,3 +1,3 @@
 # Locally calculated
-sha256  d48cbd1ce475b9e178206bf3b72d56b66d84d44f64ac05803328396234d67723  SDL2_ttf-2.22.0.tar.gz
-sha256  a0e8ce06504966e45088ee1cc7583cc8af9aac615d4cf56d47d847da9cb15139  LICENSE.txt
+sha256  0b2bf1e7b6568adbdbc9bb924643f79d9dedafe061fa1ed687d1d9ac4e453bfd  SDL2_ttf-2.24.0.tar.gz
+sha256  7826eca0a0f7e591f38dd844e207a200aac81a59b20d8a30c3af8c6282af13e6  LICENSE.txt

package/sdl2_ttf/sdl2_ttf.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-SDL2_TTF_VERSION = 2.22.0
+SDL2_TTF_VERSION = 2.24.0
 SDL2_TTF_SOURCE = SDL2_ttf-$(SDL2_TTF_VERSION).tar.gz
 SDL2_TTF_SITE = http://www.libsdl.org/projects/SDL_ttf/release
 SDL2_TTF_LICENSE = Zlib