Bumping gaia.json for 3 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/4269da37147a
Author: Hubert Figuière <hub@figuiere.net>
Desc: Merge pull request #26362 from hfiguiere/rtl-player-fixes

Bug 1101603 - RTL fixes for player. r=squib

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https://hg.mozilla.org/integration/gaia-central/rev/0492198d3a59
Author: Hubert Figuière <hub@figuiere.net>
Desc: Bug 1101603 - change the rating star order in RTL.

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https://hg.mozilla.org/integration/gaia-central/rev/e6df89d19454
Author: Hubert Figuière <hub@figuiere.net>
Desc: Bug 1101603 - RTL fixes for player.

-Force the player control order to LTR.
-Fix the Player cover in RTL.
-Adjust the progress alignment.
Bumping manifests a=b2g-bump