Feature Extractor: Wav2Vec2 & Speech2Text - Allow truncation + padding=longest (#13600)
* correct
* add tests
* Update src/transformers/feature_extraction_sequence_utils.py
Co-authored-by: Sylvain Gugger <35901082+sgugger@users.noreply.github.com>
Co-authored-by: Sylvain Gugger <35901082+sgugger@users.noreply.github.com>