Update tokenizers requirement from <0.16,>=0.10 to >=0.10,<0.20

Updates the requirements on [tokenizers](https://github.com/huggingface/tokenizers) to permit the latest version.
- [Release notes](https://github.com/huggingface/tokenizers/releases)
- [Changelog](https://github.com/huggingface/tokenizers/blob/main/RELEASE.md)
- [Commits](huggingface/tokenizers@rust-v0.10.0...v0.19.1)

---
updated-dependencies:
- dependency-name: tokenizers
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

pyproject.toml

@@ -32,7 +32,7 @@ dependencies = [
     "sentencepiece",
     "tensorboardx",
     "torchmetrics >= 0.9, < 2.0",
-    "tokenizers >= 0.10, < 0.16",
+    "tokenizers >= 0.10, < 0.20",
     "tomli",
     "torch >= 2.0, < 2.3",
     "transformers >= 4.19.0, < 5.0.0, != 4.23.0, != 4.23.1",