Update sdl2_ttf from 2.20.2 to 2.22.0

fixes #2963
fixes #2902
fixes kivy/buildozer#1772

Author: Fak3

pythonforandroid/recipes/sdl2_ttf/__init__.py

@@ -2,7 +2,7 @@
 
 
 class LibSDL2TTF(BootstrapNDKRecipe):
-    version = '2.20.2'
+    version = '2.22.0'
     url = 'https://github.com/libsdl-org/SDL_ttf/releases/download/release-{version}/SDL2_ttf-{version}.tar.gz'
     dir_name = 'SDL2_ttf'