ffmpeg: update to version 5.1.3

Fixes CVEs:
CVE-2022-3964 [1]
CVE-2022-3965 [2]

[1] https://nvd.nist.gov/vuln/detail/CVE-2022-3964
[2] https://nvd.nist.gov/vuln/detail/CVE-2022-3965



Signed-off-by: Josef Schlehofer <pepe.schlehofer@gmail.com>
(cherry picked from commit 87b2a2bb57c42b3c91393a387cd02367e59910f5)