Log Message:
{lib,}mediainfo: update to 20.03

Version 20.03, 2020-04-03
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+ AC-4 full featured support (presentations, groups, substreams)
+ MPEG-H 3D Audio basic support
+ MPEG-TS: audio preselection descriptor support
+ Dolby Vision v2 detection
+ MPEG-4: support of colr/nclx (color information) box
x URL encoding option fixes, permitting to use URL encoded or non URL encoded links
x AAC: fix SBR frequency when in ADIF
x DPX: ColorimetricSpecification and TransferCharacteristic were inverted
x Several crash and memory leaks fixes