libvpx: Heap buffer overflow related to VP9 encoding

A flaw was found in libvpx. Encoding a frame with larger dimensions than the original configured size with VP9 may result in a heap overflow...

UBUNTU-CVE-2023-6349

A heap overflow vulnerability exists in libvpx - Encoding a frame that has larger dimensions than the originally configured size with VP9 may result in a heap overflow in libvpx. We recommend upgrading to version 1.13.1 or above...