Build failure: renpy

[7c6f434c]

Steps To Reproduce

Steps to reproduce the behavior:

1. build renpy

Build log

The issue:

ffmedia.c: In function ‘decode_audio’:
ffmedia.c:693:30: error: ‘AVFrame’ has no member named ‘channel_layout’; did you mean ‘ch_layout’?
693 |             converted_frame->channel_layout = AV_CH_LAYOUT_STEREO;
    |                              ^~~~~~~~~~~~~~
    |                              ch_layout

Additional context

#337855

(renpy.override { ffmpeg = ffmpeg_6; })
``` builds fine

Latest RenPy tag in the repo is still 8.3.1 

Upstream fix https://github.com/renpy/renpy/pull/5687 merged.

> This needs to wait for us to drop Windows 7 support, which will happen in the 8.4 release cycle.

```nix
renpy.overrideAttrs (x: { patches = x.patches ++ [
  (fetchpatch {
    url="https://github.com/renpy/renpy/pull/5687.patch";
    hash="sha256-XtCH5CjF9VtkKFgs7ormBVNaOFcg9lJljdQm5oR7jKI=";
})];})
``` builds fine.

So the question is: which is better to submit as a stop-gap build fix PR until the upstream release?

### Notify maintainers

@ShadowRZ 

### Metadata

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