[nautilus] meson: Use gnome.post_install

[António Fernandes <antoniof src gnome org>]

commit ed911e8275128059fd181d5dea8ae6ac2424a4bb
Author: Maximiliano Sandoval R <msandova gnome org>
Date:   Fri Feb 18 17:03:38 2022 +0100

    meson: Use gnome.post_install

 build-aux/meson/postinstall.py | 27 ---------------------------
 meson.build                    |  9 +++++----
 2 files changed, 5 insertions(+), 31 deletions(-)
---
diff --git a/meson.build b/meson.build
index c60460d02..5376f8084 100644
--- a/meson.build
+++ b/meson.build
@@ -223,7 +223,8 @@ endforeach
 # End build #
 #############
 
-#########################################################
-# Compile GSettings schemas when installing from source #
-#########################################################
-meson.add_install_script('build-aux/meson/postinstall.py')
+gnome.post_install(
+  gtk_update_icon_cache: true,
+  glib_compile_schemas: true,
+  update_desktop_database: true,
+)