Update libavif (v0.12-main) and AOM (3.6) for improved compression and speed (#1334)

* Update libavif and AOM (3.6) for improved compression and speed

* Minor fixes to package-lock done by NPM, also trigger new build

* Update AVIF version

---------

Co-authored-by: Jake Archibald <jaffathecake@gmail.com>

codecs/avif/Makefile

@@ -1,9 +1,9 @@
 # libavif and libaom versions are from
-# https://docs.google.com/document/d/1wEEA5rRU7wT54k41u3qyZIZHDCJArIMzLuzsrLAwaK8/edit
-CODEC_URL = https://github.com/AOMediaCodec/libavif/archive/1c39e772c2c0d687691dd4b589a12c323f5f767d.tar.gz
+# google3/third_party/libavif/METADATA
+CODEC_URL = https://github.com/AOMediaCodec/libavif/archive/647c3c208cf152395d777c1bf7240d2ecf7df5a9.tar.gz
 CODEC_PACKAGE = node_modules/libavif.tar.gz
 
-LIBAOM_URL = https://aomedia.googlesource.com/aom/+archive/v3.1.0.tar.gz
+LIBAOM_URL = https://aomedia.googlesource.com/aom/+archive/v3.6.0.tar.gz
 LIBAOM_PACKAGE = node_modules/libaom.tar.gz
 
 export CODEC_DIR = node_modules/libavif