build: Bump up Meson dependency
Use something slightly less ancient than 0.50.
project('graphene', 'c',
version: '1.10.7',
license: 'MIT',
- meson_version: '>= 0.50.1',
+ meson_version: '>= 0.55.3',
default_options: [
'buildtype=debugoptimized',
'c_std=c99',
