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

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https://hg.mozilla.org/integration/gaia-central/rev/23af2650ba2b
Author: Anthony Ricaud <anthony@ricaud.me>
Desc: Merge pull request #15468 from Rik/orange-contact-934583

Bug 934583 - The phone number is highlighted in red not orange when init... r=arcturus

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https://hg.mozilla.org/integration/gaia-central/rev/aa8df5b5887f
Author: Anthony Ricaud <anthony@ricaud.me>
Desc: Bug 934583 - The phone number is highlighted in red not orange when initiating a call from the call log
Bumping manifests a=b2g-bump