build(deps): Update tiktoken requirement from >=0.7.0 to >=0.13.0

[dependabot]

Updates the requirements on tiktoken to permit the latest version.

Changelog

Sourced from tiktoken's changelog.

[v0.13.0]

• Update fancy-regex for significantly increased performance
• Branch byte pair encoding to fix performance on unusual input
• Fix AttributeError caused by incomplete redaction of experimental code
• Update version of pyo3
• Update version of optional dependency blobfile

[v0.12.0]

• Build wheels for Python 3.14
• Build musllinux aarch64 wheels
• Support for free-threaded Python
• Update version of pyo3 and rustc-hash
• Avoid use of blobfile for reading local files
• Recognise gpt-5 model identifier
• Minor performance improvement for file reading

[v0.11.0]

• Support for GPT-5
• Update version of pyo3
• Use new Rust edition
• Fix special token handling in encode_to_numpy
• Better error handling
• Improvements to private APIs

[v0.10.0]

• Support for newer models
• Improvements to private APIs

[v0.9.0]

• Support for o1 and o3 models
• Better error messages when loading invalid vocabulary files
• Support for encoding to numpy arrays
• Delayed imports when not strictly necessary

[v0.8.0]

• Support for o1- and chatgpt-4o- models
• Build wheels for Python 3.13
• Add possessive quantifiers to limit backtracking in regular expressions, thanks to @​l0rinc!
• Provide a better error message and type for invalid token decode
• Permit tuples in type hints
• Better error message for passing invalid input to get_encoding
• Better error messages during plugin loading
• Add a __version__ attribute
• Update versions of pyo3, regex, fancy-regex
• Drop support for Python 3.8

[v0.7.0]

• Support for gpt-4o

... (truncated)

Commits

• fa8b65d Partial sync of codebase (#543)
• dcb3928 [codex] Pin GitHub Actions workflow references (#515)
• 6ec8149 Partial sync of codebase (#495)
• 6ad70b2 Upgrade GitHub Actions for Node 24 compatibility (#472)
• 97e49cb Release 0.12.0
• 9485498 Partial sync of codebase (#451)
• 00ff187 Add GPT-5 model support with o200k_base encoding (#440)
• 5ee89ca chore: update dependencies (#449)
• 2ab6d37 Support the free-threaded build (#443)
• 82dc3bb bump PyO3 version (#444)
• Additional commits viewable in compare view

[dependabot]

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