meson: update harfbuzz version

meson.build

diff --git a/meson.build b/meson.build
index bd7f275..0b3f4e0 100644
--- a/meson.build
+++ b/meson.build
@@ -1,6 +1,6 @@
 project('harfbuzz', 'c', 'cpp',
   meson_version: '>= 0.47.0',
-  version: '1.7.6')
+  version: '2.2.0')
 
 pkgmod = import('pkgconfig')
 cpp = meson.get_compiler('cpp')