[v0.13] Release Tracker

[carolineechen]

0.13 release branch for 0.13 has been cut. The latest common commit with main is 8418790

This issue is for keeping track of cherry-picks to the release branch

[carolineechen]

Build/CI-related changes
#2747: fix windows python 3.8 loading
#2755: increate inactivity timeout
#2759: fix torchaudio build channel for release
#2758: skip hubert xlarge torchscript test on CI

[nateanl]

#2716: Improve initialization of wav2vec2/hubert model for pre-training

[carolineechen]

#2751: add metadata mode for LibriMix

[nateanl]

#2744 Improve hubert recipe for pre-training and fine-tuning

[mthrok]

#2764 Update tutorial author information

[carolineechen]

#2761 fix typos in tacotron 2 tutorial (tutorial)
#2763 Add gtzan download note (docs)
#2762 Add custom lm example to tutorial (tutorial)
#2766 Fix CTCDecoder doc (docs)

[nateanl]

#2769 Fix fading in hybrid demucs tutorial

[mthrok]

#2771 Fix leaking matplotlib figure

[mthrok]

#2773 Update resampling tutorial

[nateanl]

#2774 Update description of HDemucs pipelines

[nateanl]

#2775 Add file_name to the returned item in Snips dataset
#2776 Add notes on file structure in Voxceleb1 based datasets

[carolineechen]

#2777 Update speech commands download path
#2778 Add iemocap dataset variants

[nateanl]

#2781 Fix doc in torchaudio.backend