Fix Meson version required for C23 support

Attempting to build with Meson 1.3.2 (current version in Ubuntu 24.04 LTS) gives the following error:

    meson.build:1:0: ERROR: Unknown C std ['c23'].

This is because C23 support was not added until Meson 1.4.0.

See:

https://github.com/mesonbuild/meson/blob/1.3.2/mesonbuild/compilers/c.py#L59
https://github.com/mesonbuild/meson/blob/1.4.0/mesonbuild/compilers/c.py#L49

meson.build

@@ -5,7 +5,7 @@ project(
 	license: 'MIT',
 	meson_version: '>=1.3',
 	default_options: [
-		'c_std=' + (meson.version().version_compare('>=1.3.0') ? 'c23,c11' : 'c11'),
+		'c_std=' + (meson.version().version_compare('>=1.4.0') ? 'c23,c11' : 'c11'),
 		'warning_level=2',
 		'werror=true',
 	],