ctranslate2 version is too old

Why do you use so old `ctranslate2` version?

I take this error:
```sh
ERROR: Could not find a version that satisfies the requirement ctranslate2==2.10.1 (from versions: 2.23.0, 2.24.0, 3.0.0, 3.0.1, 3.0.2, 3.1.0, 3.2.0, 3.3.0, 3.4.0, 3.5.0, 3.5.1, 3.6.0, 3.7.0, 3.8.0, 3.9.0, 3.9.1, 3.10.0, 3.10.1, 3.10.2, 3.10.3, 3.11.0, 3.12.0, 3.13.0, 3.14.0)
ERROR: No matching distribution found for ctranslate2==2.10.1
```

Start by locating where `ctranslate2==2.10.1` is pinned and checking the package versions available for the project's Python environment. Done means the dependency can be installed from an available version and the training scripts remain compatible; the issue names no files or tests.

Written by the indexing model from the issue text.