Update sentencepiece requirement from 0.1.98 to 0.2.0

Updates the requirements on [sentencepiece](https://github.com/google/sentencepiece) to permit the latest version.
- [Release notes](https://github.com/google/sentencepiece/releases)
- [Commits](https://github.com/google/sentencepiece/compare/v0.1.98...v0.2.0)

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

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pyproject.toml

@@ -45,7 +45,7 @@ anthropic = "0.21.3"
 toml = "*"
 pypdf = "4.1.0"
 accelerate = "*"
-sentencepiece = "0.1.98"
+sentencepiece = "0.2.0"
 httpx = "0.24.1"
 tiktoken = "0.5.2"
 ratelimit = "2.2.1"