Update getID3 library to 1.9.8.

Changes:
https://github.com/JamesHeinrich/getID3/compare/1.9.7...v1.9.8

Fixes #29627.

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Allow arbitrary subdomains for the oEmbed endpoint for Slideshare.

Props Latz.
Fixes #29427.

Built from https://develop.svn.wordpress.org/trunk@29735


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After [29733], version bump for MediaElement.

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git-svn-id: http://core.svn.wordpress.org/trunk@29510 1a063a9b-81f0-0310-95a4-ce76da25c4cd