bump min meson version

since "check" needs 0.54.1

Author: jcupitt

meson.build

@@ -7,7 +7,8 @@ project(
     'warning_level=2',
   ],
   license : 'MIT',
-  meson_version : '>=0.50',
+  # "check" needs 0.54.1
+  meson_version : '>=0.54.1',
   version : '1.0.0'
 )
 if not meson.is_subproject()