chore(deps): bump tiktoken-rs from 0.5.9 to 0.6.0

Bumps [tiktoken-rs](https://github.com/zurawiki/tiktoken-rs) from 0.5.9 to 0.6.0.
- [Release notes](https://github.com/zurawiki/tiktoken-rs/releases)
- [Commits](zurawiki/tiktoken-rs@v0.5.9...v0.6.0)

---
updated-dependencies:
- dependency-name: tiktoken-rs
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

Cargo.lock

@@ -35,7 +35,7 @@ simple_logger = "5.0.0"
 strum = "0.26.0"
 strum_macros = "0.26.0"
 tera = { version = "1.19.1", default-features = false }
-tiktoken-rs = { version = "0.5.4", features = ["async-openai"] }
+tiktoken-rs = { version = "0.6.0", features = ["async-openai"] }
 tokio = { version = "1.32.0", features = ["full"] }
 toml = "0.8.0"
 toml_edit = "0.22.0"