build(deps-dev): update chardet requirement from <6 to <8

[dependabot]

Updates the requirements on chardet to permit the latest version.

Release notes

Sourced from chardet's releases.

chardet 7.2.0

Features

• Added include_encodings and exclude_encodings parameters to detect(), detect_all(), and UniversalDetector — restrict or exclude specific encodings from the candidate set, with corresponding -i/--include-encodings and -x/--exclude-encodings CLI flags (#343)
• Added no_match_encoding (default "cp1252") and empty_input_encoding (default "utf-8") parameters — control which encoding is returned when no candidate survives the pipeline or the input is empty, with corresponding CLI flags (#343)
• Added -l/--language flag to chardetect CLI — shows the detected language (ISO 639-1 code and English name) alongside the encoding (#342)

Fixes

• Fixed null-separated ASCII data being misdetected as UTF-16-BE (#346, #347)

Full changelog: https://chardet.readthedocs.io/en/latest/changelog.html

Changelog

Sourced from chardet's changelog.

7.2.0 (2026-03-17)

Features:

• Added include_encodings and exclude_encodings parameters to :func:~chardet.detect, :func:~chardet.detect_all, and :class:~chardet.UniversalDetector — restrict or exclude specific encodings from the candidate set, with corresponding -i/--include-encodings and -x/--exclude-encodings CLI flags (Dan Blanchard <https://github.com/dan-blanchard>, [#343](https://github.com/chardet/chardet/issues/343) <https://github.com/chardet/chardet/pull/343>)
• Added no_match_encoding (default "cp1252") and empty_input_encoding (default "utf-8") parameters — control which encoding is returned when no candidate survives the pipeline or the input is empty, with corresponding CLI flags (Dan Blanchard <https://github.com/dan-blanchard>, [#343](https://github.com/chardet/chardet/issues/343) <https://github.com/chardet/chardet/pull/343>)
• Added -l/--language flag to chardetect CLI — shows the detected language (ISO 639-1 code and English name) alongside the encoding (Dan Blanchard <https://github.com/dan-blanchard>, [#342](https://github.com/chardet/chardet/issues/342) <https://github.com/chardet/chardet/pull/342>)

7.1.0 (2026-03-11)

Features:

• Added PEP 263 encoding declaration detection — # -*- coding: ... -*- and # coding=... declarations on lines 1–2 of Python source files are now recognized with confidence 0.95 (Dan Blanchard <https://github.com/dan-blanchard>, [#249](https://github.com/chardet/chardet/issues/249) <https://github.com/chardet/chardet/issues/249>)
• Added chardet.universaldetector backward-compatibility stub so that from chardet.universaldetector import UniversalDetector works with a deprecation warning (Dan Blanchard <https://github.com/dan-blanchard>, [#341](https://github.com/chardet/chardet/issues/341) <https://github.com/chardet/chardet/issues/341>)

Fixes:

• Fixed false UTF-7 detection of ASCII text containing ++ or +word patterns (Dan Blanchard <https://github.com/dan-blanchard>, [#332](https://github.com/chardet/chardet/issues/332) <https://github.com/chardet/chardet/issues/332>, [#335](https://github.com/chardet/chardet/issues/335) <https://github.com/chardet/chardet/pull/335>_)
• Fixed 0.5s startup cost on first detect() call — model norms are now computed during loading instead of lazily iterating 21M entries (Dan Blanchard <https://github.com/dan-blanchard>_,

... (truncated)

Commits

• 884996a docs: set 7.2.0 release date to 2026-03-17
• 64361f8 docs: add CLI examples for --no-match-encoding and --empty-input-encoding
• 89a9a4c Fix null-separated ASCII misdetected as UTF-16-BE (#347)
• a98f097 docs: add example output to all CLI commands for consistency
• d2f4ac2 docs: document 7.2.0 features (encoding filters, --language CLI flag)
• 575fa96 test: add include_encodings accuracy preservation tests
• 66e21fc fix: strengthen weak tests and remove duplicates
• e1428c3 Add include/exclude encoding filters (#343)
• 63e90b5 fix: pass --no-binary chardet for pinned versions with --pure
• 2fe8993 fix: handle missing ISO_TO_LANGUAGE in older chardet versions
• Additional commits viewable in compare view

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[llucax]

We don't want this, we want to keep it pinned to an older version as a hack to workaround #527.

[dependabot]

OK, I won't notify you again about this release, but will get in touch when a new version is available. If you'd rather skip all updates until the next major or minor version, let me know by commenting @dependabot ignore this major version or @dependabot ignore this minor version. You can also ignore all major, minor, or patch releases for a dependency by adding an ignore condition with the desired update_types to your config file.

If you change your mind, just re-open this PR and I'll resolve any conflicts on it.

[llucax]

@dependabot ignore this major version

[dependabot]

OK, I won't notify you about version 7.x.x again, unless you re-open this PR.