deps(deps): bump idna from 2.5 to 3.18

[dependabot]

Bumps idna from 2.5 to 3.18.

Release notes

Sourced from idna's releases.

v3.18

No release notes provided.

v3.17

No release notes provided.

v3.16

No release notes provided.

v3.15

No release notes provided.

v3.14

No release notes provided.

v3.13

No release notes provided.

v3.12

No release notes provided.

v3.11

No release notes provided.

v3.10

No release notes provided.

v3.9

No release notes provided.

v3.8

What's Changed

• Fix regression where IDNAError exception was not being produced for certain inputs.
• Add support for Python 3.13, drop support for Python 3.5 as it is no longer testable.
• Documentation improvements
• Updates to package testing using Github actions

Thanks to Hugo van Kemenade for contributions to this release.

Full Changelog: kjd/idna@v3.7...v3.8

v3.7

What's Changed

• Fix issue where specially crafted inputs to encode() could take exceptionally long amount of time to process. [CVE-2024-3651]

Thanks to Guido Vranken for reporting the issue.

Full Changelog: kjd/idna@v3.6...v3.7

Changelog

Sourced from idna's changelog.

3.18 (2026-06-02)

• When decoding a domain, add a display argument that will pass through invalid labels rather than raising an exception.

3.17 (2026-05-28)

• Substantial 75% reduction in memory usage through new data structures and some optimization in processing speed.
• Added a general 1024-character input length cap to the public validation, conversion, and codec entry points. This is well above any legitimate domain or label and guards against pathological inputs.

3.16 (2026-05-22)

• Add a command-line interface (python -m idna, also available as the idna script). Encodes or decodes one or more domains supplied as arguments or on standard input, with options to select A-label or U-label output and control error handling.
• Raise the minimum supported Python version to 3.9
• Various code quality improvements

3.15 (2026-05-12)

• Enforce DNS-length cap on individual labels early in check_label, short-circuiting contextual-rule processing for oversized input while staying compatible with UTS 46 usage.
• Tidy core helpers: hoist bidi category sets to module-level frozensets (avoiding per-codepoint list construction), simplify length checks, and reuse the shared _unicode_dots_re from idna.core in the codec module.
• Use raise ... from err for proper exception chaining and switch internal string formatting to f-strings.
• Allow flit_core 4.x in the build backend.
• Expand the ruff lint set (flake8-bugbear, flake8-simplify, pyupgrade, perflint) and apply the surfaced fixes; pin lint CI to Python 3.14.
• Add Dependabot configuration for GitHub Actions.
• Convert README and HISTORY from reStructuredText to Markdown.
• Reference CVE-2026-45409 for the 3.14 advisory in place of the initial GHSA identifier.

Thanks to Felix Yan, Stan Ulbrych, and metsw24-max for contributions to this release.

3.14 (2026-05-10)

• Removed opportunity to process long inputs into quadratic time by rejecting oversize inputs up-front. Closes a bypass

... (truncated)

Commits

• f39ea90 Release 3.18
• 40f4e40 Pre-release 3.18rc0
• 1a5bf80 Merge pull request #253 from kjd/lenient-decode
• 5bbb26f Merge branch 'master' into lenient-decode
• c532bae Rename decode() lenient= option to display= (issue #248)
• 0b1758b Merge pull request #252 from kjd/release-3.17
• f48619c Release 3.17
• 7421ba8 Pre-release 3.17rc0
• 22ebb73 Merge pull request #251 from kjd/structure-optimizations
• 2a7ac0a Drop redundant parallel-arrays comment from uts46data
• Additional commits viewable in compare view

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