Upgrade media / GStreamer / GLib (#30750)

- Upgrade the version of GStreamer for Windows

This upgrades the Windows build to use the most recent version of
GStreamer. This is necessary to upgrade our GStreamer dependency.

- Stop shipping GStreamer binaries on Linux

The binary bundle of GStreamer that we package is not used to compile --
only to run layout tests. It's too old for the APIs that we are using
(as evidenced by needed 1.18 for WebRTC) and nowadays Linux
distributions carry a new version so it's unecessary for our build
machines. No longer using this binary bundle will allow us to upgrade
our GStreamer dependency -- which now has stricter checks that we
are using at least version 1.18.

- Upgrade media to use newer versions of GStreamer / GLib dependencies

components/script/dom/rtcdatachannel.rs

@@ -378,9 +378,9 @@ impl From<&RTCDataChannelInit> for DataChannelInit {
 impl From<DataChannelState> for RTCDataChannelState {
     fn from(state: DataChannelState) -> RTCDataChannelState {
         match state {
-            DataChannelState::New |
-            DataChannelState::Connecting |
-            DataChannelState::__Unknown(_) => RTCDataChannelState::Connecting,
+            DataChannelState::Connecting | DataChannelState::__Unknown(_) => {
+                RTCDataChannelState::Connecting
+            },
             DataChannelState::Open => RTCDataChannelState::Open,
             DataChannelState::Closing => RTCDataChannelState::Closing,
             DataChannelState::Closed => RTCDataChannelState::Closed,