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

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https://hg.mozilla.org/integration/gaia-central/rev/bde9a50e6d68
Author: Aleh Zasypkin <aleh.zasypkin@gmail.com>
Desc: Merge pull request #23067 from azasypkin/bug-1054004-l10n-race-basic

Bug 1054004 - [Messages] There is a possible race condition between navigator.mozL10n.ready and "DOMContentLoaded". r=schung

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https://hg.mozilla.org/integration/gaia-central/rev/f9386ebe1d75
Author: Aleh Zasypkin <azasypkin@mozilla.com>
Desc: Bug 1054004 - [Messages] There is a possible race condition between navigator.mozL10n.ready and "DOMContentLoaded". r=schung
Bumping manifests a=b2g-bump