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

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https://hg.mozilla.org/integration/gaia-central/rev/a8f1466cc8ed
Author: Aleh Zasypkin <aleh.zasypkin@gmail.com>
Desc: Merge pull request #25749 from azasypkin/bug-1080828-rtl-number

Bug 1080828 - [Messages][RTL] International phone numbers and groupmms threads are not correctly displayed. r=julien

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https://hg.mozilla.org/integration/gaia-central/rev/39ca38dc35e3
Author: Aleh Zasypkin <azasypkin@mozilla.com>
Desc: Bug 1080828 - [Messages][RTL] International phone numbers and groupmms threads are not correctly displayed. r=julien
Bumping manifests a=b2g-bump