release 0.6.2.5

Bugfixes

• Security fix: fix heap buffer overflow in AES key unwrap by validating the encrypted_key length before AES_unwrap_key, see advisory GHSA-75r7-f5cv-g3wj
• Fix functions that rely on nonportable malloc behaviour; closes #29; thanks @kirill-shevtsov
• Merge fixes from cisco/cjose, see #30; thanks @bifurcation and @yasuoka:
  • Check ECDH secret allocation result
  • Check base64 decode length bounds
  • Guard JWK retain count overflow
  • Enforce JOSE IV lengths
  • Check JOSE algorithms against key types
  • Validate critical JOSE headers
  • Cleanse sensitive buffers before release
  • Guard JWE buffer length calculations
  • Use OpenSSL constant-time comparisons
  • Validate EC inputs before key agreement
  • Fix JWS import allocation handling

Other

• re-generate automake/autoconf files with automake v1.18.1 and autoconf v2.72
• added Debian Trixie and Ubuntu Resolute packages

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