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

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https://hg.mozilla.org/integration/gaia-central/rev/49ce8ee9e4fa
Author: Arnau <arnau@arnaumarch.com>
Desc: Merge pull request #20796 from pacorampas/call-screen-space-name-number-1026341

Bug 1026341 - [Dialer][Call Screen][Flame] Some space, a thin line, not covered by name, number white background r=rik

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https://hg.mozilla.org/integration/gaia-central/rev/ca9326a529ed
Author: Paco Rampas <pacorampas@gmail.com>
Desc: Bug 1026341 - [Dialer][Call Screen][Flame] Some space, a thin line, not covered by name, number white background
Bumping manifests a=b2g-bump