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

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https://hg.mozilla.org/integration/gaia-central/rev/9379600338b4
Author: Aleh Zasypkin <aleh.zasypkin@gmail.com>
Desc: Merge pull request #26527 from azasypkin/bug-1102132-rtl-panel-slide

Bug 1102132 - [Messages][RTL] Move the "sliding" transition back to be the same than in LTR conditions. r=schung

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https://hg.mozilla.org/integration/gaia-central/rev/d91f7f5757aa
Author: Aleh Zasypkin <azasypkin@mozilla.com>
Desc: Bug 1102132 - [Messages][RTL] Move the "sliding" transition back to be the same than in LTR conditions. r=schung
Bumping manifests a=b2g-bump