chore: release

[caiopensrc]

🤖 New release

• c2pa: 0.82.0 -> 0.82.1 (✓ API compatible changes)
• c2pa-c-ffi: 0.82.0 -> 0.82.1
• c2patool: 0.26.55 -> 0.26.56

Changelog

c2pa

0.82.1

04 May 2026

Fixed

• Harden against integer underflow attack in GIF XMP validation (#2099)
• Harden error code mapping for hash mismatch in validator (#2101)
• Update logic for stale thumbnails detection in redaction (#2107)

c2pa-c-ffi

0.82.1

04 May 2026

c2patool

0.26.56

04 May 2026

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This PR was generated with release-plz.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 78.28%. Comparing base (447366e) to head (b39b26b).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2112   +/-   ##
=======================================
  Coverage   78.28%   78.28%           
=======================================
  Files         177      177           
  Lines       45599    45599           
=======================================
  Hits        35695    35695           
  Misses       9904     9904           

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[codspeed-hq]

Merging this PR will not alter performance

✅ 32 untouched benchmarks
⏩ 2 skipped benchmarks¹

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_{Comparing release-plz-2026-05-02T00-30-07Z (b39b26b) with main (447366e)}

Footnotes

1. 2 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports. ↩