Try ffmpeg>4

Author: samanklesaria

.github/scripts/unittest-linux/install.sh

@@ -86,8 +86,7 @@ pip install . -v --no-build-isolation
 
 # 3. Install Test tools
 printf "* Installing test tools\n"
-# On this CI, for whatever reason, we're only able to install ffmpeg 4.
-conda install -y "ffmpeg<5"
+conda install -y "ffmpeg>4"
 python -c "import torch; import torchaudio; import torchcodec; print(torch.__version__, torchaudio.__version__, torchcodec.__version__)"
 
 NUMBA_DEV_CHANNEL=""