Bumping gaia.json for 2 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/9775a3cd2b97
Author: John Hu <johu@mozilla.com>
Desc: Merge pull request #22824 from vsireesha246/Bug_1050650_Video_Thumbnail_Style_Change

Bug 1050650 - [Video]Extra space in thumbnail select screen r=john hu

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https://hg.mozilla.org/integration/gaia-central/rev/e65dcf87515d
Author: varada.sireesha <varada.sireesha@lge.com>
Desc: Bug 1050650 - [Video]Extra space in thumbnail select screen
Bumping manifests a=b2g-bump