chore(deps): bump tiktoken from 0.12.0 to 0.13.0

Bumps [tiktoken](https://github.com/openai/tiktoken) from 0.12.0 to 0.13.0.
- [Release notes](https://github.com/openai/tiktoken/releases)
- [Changelog](https://github.com/openai/tiktoken/blob/main/CHANGELOG.md)
- [Commits](openai/tiktoken@0.12.0...0.13.0)

---
updated-dependencies:
- dependency-name: tiktoken
  dependency-version: 0.13.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

requirements-pinned.txt

@@ -31,5 +31,5 @@ mypy==1.20.2
 # sphinx-rtd-theme==2.0.0
 
 # Benchmarking
-tiktoken==0.12.0
+tiktoken==0.13.0
 matplotlib==3.10.9