Bumping gaia.json for 2 gaia-central revision(s)

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https://hg.mozilla.org/integration/gaia-central/rev/f23ea95edc32
Author: Ran Ben Aharon <ran@everything.me>
Desc: Merge pull request #11483 from EverythingMe/bugfix-loadmore

Bug 904085 - Can't load more apps into Collection results [r=gregor]

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https://hg.mozilla.org/integration/gaia-central/rev/f426ecbd4885
Author: Ran Ben Aharon <ran@ranbena.com>
Desc: Bug 904085 - Can't load more apps into Collection results