Security update for libaom

This update for libaom fixes the following issues:

- CVE-2021-30475: Fixed buffer overflow in aom_dsp/noise_model.c (bsc#1189497).

This update was imported from the SUSE:SLE-15-SP2:Update update project.

Fixed bugs
bnc#1189497
VUL-0: CVE-2021-30475: libaom: Buffer overflow in aom_dsp/noise_model.c
Selected Binaries
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