Update dependency ftfy to v6.3.1

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
ftfy (changelog)	==6.1.3 -> ==6.3.1

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Release Notes

rspeer/python-ftfy (ftfy)

v6.3.1

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• Fixed license metadata field in pyproject.toml.
• Removed extraneous files from the hatchling sdist output.

v6.3.0

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• Switched packaging from poetry to uv.
• Uses modern Python packaging exclusively (no setup.py).
• Added support for mojibake in Windows-1257 (Baltic).
• Detects mojibake for "Ü" in an uppercase word, such as "ZURÜCK".
• Expanded a heuristic that notices improbable punctuation.
• Fixed a false positive involving two concatenated strings, one of which began with the § sign.
• Rewrote chardata.py to be more human-readable and debuggable, instead of being full of
  keysmash-like character sets.

v6.2.3

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• Updated PyPI metadata.

v6.2.2

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• Updated Read the Docs config so that docs might build again.

v6.2.1

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• Updated setup.py and tox.ini to indicate support for Python 3.8 through 3.13.
• Replaced the text file used in CLI tests with a better one that tests the same issue.
• Lints and auto-formatting using ruff.
• Packaging and test fixes by Michał Górny.

v6.2.0

• Fixed a case where an en-dash and a space near other mojibake would be
  interpreted (probably incorrectly) as MacRoman mojibake.
• Added [project.urls] metadata to pyproject.toml.
• README contains license clarifications for entitled jerks.

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