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

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https://hg.mozilla.org/integration/gaia-central/rev/2dd9a2c9e499
Author: viorelaioia <viorela.ioia@softvision.ro>
Desc: Merge pull request #24515 from bebef1987/email_frame

Bug 1074144 - Fix Email app oauth2 authentication failure

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https://hg.mozilla.org/integration/gaia-central/rev/5c8b36cf94fc
Author: Bebe <bebe@mozilla.ro>
Desc: Bug 1074144 - Fix Email app oauth2 authentication failure
Bumping manifests a=b2g-bump