meson: keep track of changes in Cargo.toml and lockfile

meson.build

@@ -40,6 +40,14 @@ else
   version_suffix = ''
 endif
 
+podcast_toml = files(
+  'Cargo.toml',
+  'Cargo.lock',
+  'podcasts-data/Cargo.toml',
+  'podcasts-downloader/Cargo.toml',
+  'podcasts-gtk/Cargo.toml',
+)
+
 application_id = 'org.gnome.Podcasts@0@'.format(profile)
 i18n = import('i18n')
 gnome = import('gnome')

podcasts-gtk/src/meson.build

@@ -61,6 +61,7 @@ podcasts_sources = files(
 cargo_release = custom_target('cargo-build',
                         build_by_default: true,
                         input: [
+                                podcast_toml,
                                 data_sources,
                                 downloader_sources,
                                 podcasts_sources,