chore(deps): update dependency idna to v3.19

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
idna (changelog)	3.18 → 3.19

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Release Notes

kjd/idna (idna)

v3.19

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• Restore the std3_rules option, which had no effect since changes
  to UTS #​46 processing in Unicode 16. Note that uts46_remap()
  defaults to enabling STD3 rules, so direct callers will see input
  containing non-LDH ASCII characters rejected again.
• Performance improvements to UTS #​46 mapping, particularly for
  ASCII-only domains.
• Test on free-threaded CPython with the GIL disabled and document
  thread safety.
• Expose the Unicode version of the generated tables as
  idna.unicode_version, and show it in idna --version.
• Add code, text, codepoint and position attributes to
  IDNAError so that the failed rule and the offending character can
  be identified without parsing the exception message.
• The deprecated transitional argument to encode() and
  uts46_remap() is now completely ignored, and gives a deprecation warning
  for the latter.
• Reject A-labels that are not the canonical Punycode encoding of
  their U-label.
• Fix CONTEXTJ violations raising IDNAError instead of
  InvalidCodepointContext.
• Consistently raise IDNAError for empty labels and non-ASCII bytes
  passed to label helper functions and the incremental codec.
• Add property-based tests, extended fuzzing targets, coverage
  measurement, and CI checks that the data tables match the generator
  output.
• Various code quality and tooling improvements.

Thanks to stefan6419846, LouieLuNZ, and Salvatore Corvaglia for
contributions to this release.

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