fix(meson): path() is deprecated

Replaced it with `full_path()`.

Author: MightyCreak

src/diffuse/meson.build

@@ -4,7 +4,7 @@ moduledir = join_paths(pkgdatadir, 'diffuse')
 python = import('python')
 
 conf = configuration_data()
-conf.set('PYTHON', python.find_installation('python3').path())
+conf.set('PYTHON', python.find_installation('python3').full_path())
 conf.set('VERSION', meson.project_version())
 conf.set('PKGDATADIR', pkgdatadir)
 conf.set('LOCALEDIR', join_paths(get_option('prefix'), get_option('localedir')))