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

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https://hg.mozilla.org/integration/gaia-central/rev/23bda907484c
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Merge pull request #20775 from KevinGrandon/bug_1027374_search_long_press

Bug 1027374 - [B2G][e.me] long pressing an app will not prompt a menu to Add to Home Screen

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https://hg.mozilla.org/integration/gaia-central/rev/03dc9dc0d0c3
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Bug 1027374 - [B2G][e.me] long pressing an app will not prompt a menu to Add to Home Screen r=crdlc
Bumping manifests a=b2g-bump