v2.3.1 - Patch for local models with Normalize modules

This releases patches a niche bug when loading a Sentence Transformer model which:

1. is local
2. uses a Normalize module as specified in modules.json
3. does not contain the directory specified in the model configuration

This only occurs when a model with Normalize is downloaded from the Hugging Face hub and then later used locally.
See #2458 and #2459 for more details.

Release highlights

• Don't require loading files for Normalize by @tomaarsen (#2460)

Full Changelog: v2.3.0...v2.3.1