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

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https://hg.mozilla.org/integration/gaia-2_0/rev/98e67487e2a7
Author: Sergi Mansilla <sergi.mansilla@gmail.com>
Desc: Merge pull request #24807 from mpizza/Bug_1070458

Bug 1078151 - [Comms][Contacts]After we tap "Search" in Gmail view, some contacts without picture have a circle.

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https://hg.mozilla.org/integration/gaia-2_0/rev/430c35205e35
Author: PYChen <pychen@poyu.local>
Desc: Bug 1078151 - [Comms][Contacts]After we tap "Search" in Gmail view,some contacts without picture have a circle.
Bumping manifests a=b2g-bump