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

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https://hg.mozilla.org/integration/gaia-central/rev/be0c09628de9
Author: Aleh Zasypkin <aleh.zasypkin@gmail.com>
Desc: Merge pull request #20657 from azasypkin/bug-1026528-corrupted-attachment

Bug 1026528 - [Messages] Corrupted attachments do not display correctly. r=julienw

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https://hg.mozilla.org/integration/gaia-central/rev/c9d5f19bc2fa
Author: Aleh Zasypkin <azasypkin@mozilla.com>
Desc: Bug 1026528 - [Messages] Corrupted attachments do not display correctly. r=julienw
Bumping manifests a=b2g-bump