no bug - Add media/mp4parse-rust/ to the list of third party code r=kinetik

Differential Revision: https://phabricator.services.mozilla.com/D63947

--HG--
extra : moz-landing-system : lando

tools/rewriting/ThirdPartyPaths.txt

@@ -100,6 +100,7 @@ media/libvorbis/
 media/libvpx/
 media/libwebp/
 media/libyuv/
+media/mp4parse-rust/
 media/mtransport/third_party/
 media/openmax_dl/
 media/openmax_il/