2023-09-29 v1.13.1 "Ugly Duckling"
  This release contains two security related fixes. One each for VP8 and VP9.

  - Upgrading:
    This release is ABI compatible with the previous release.

  - Bug fixes:
    https://crbug.com/1486441 (CVE-2023-5217)
    Fix to a crash related to VP9 encoding (#1642)