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

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https://hg.mozilla.org/integration/gaia-central/rev/2b0f634438a7
Author: chirarobert <robert.chira@softvision.ro>
Desc: Merge pull request #25092 from bebef1987/MMS

Bug 1080169 - Update test_sms_with_attachments.py to correlate with the ...

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https://hg.mozilla.org/integration/gaia-central/rev/5339af985b62
Author: Bebe <bebe@mozilla.ro>
Desc: Bug 1080169 - Update test_sms_with_attachments.py to correlate with the manual test
Bumping manifests a=b2g-bump