build: fix fs.copyfile usage for meson versions 0.64/0.64.1

Though this function was introduced in 0.64, its usage with install_dir
was broken till meson version 1.0.0. Hence, bump the minimal required
meson version for the fs.copyfile() routine.

See the following meson commit for details:
https://github.com/mesonbuild/meson/commit/100456de0761ee949e2277c97746cb8571b6ba39

data/meson.build

@@ -11,7 +11,7 @@ service_conf = {
 }
 
 # DBus Service file
-if meson_version.version_compare('>=0.64')
+if meson_version.version_compare('>=1.0.0')
   fs.copyfile(
     'org.freedesktop.ModemManager1.conf.@0@polkit'.format(enable_polkit ? '' : 'no'),
     '@BASENAME@',

meson.build

@@ -14,7 +14,7 @@ project(
 )
 
 meson_version = meson.version()
-if meson_version.version_compare('>=0.64')
+if meson_version.version_compare('>=1.0.0')
   fs = import('fs')
 endif