build: upgrade to C++23

Meson 1.1.1 and GCC-13 both support C++23 and a sufficient portion of
the standard has been implemented.  Upgrade the build to leverage it.

Change-Id: Ia4f5ca309de77d83fdf850cb0682bbdfa75c3590
Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
diff --git a/meson.build b/meson.build
index 323118b..6a5fef9 100644
--- a/meson.build
+++ b/meson.build
@@ -4,10 +4,10 @@
     version: '1.0',
     license: 'GPLv2',
     default_options: [
-        'cpp_std=c++20',
+        'cpp_std=c++23',
         'werror=true',
     ],
-    meson_version: '>=0.58.0',
+    meson_version: '>=1.1.1',
 )
 
 install_data(