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

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https://hg.mozilla.org/integration/gaia-2_0/rev/6514bea9e1aa
Author: Paco Rampas <pacorampas@gmail.com>
Desc: Bug 1018494 - [B2G][Dialer] On the dialer app screen after the suggestions list is empty, tapping where the result count was, will still opens the overlay menu.

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https://hg.mozilla.org/integration/gaia-2_0/rev/63fcaf7ddb52
Author: DouglasSherk <github@sherk.me>
Desc: Bug 1035183 - [Dialer] Make matched suggestions not appear when there are more than 50, remove + indicator. r=Rik

Conflicts:
	apps/communications/dialer/js/suggestion_bar.js
Bumping manifests a=b2g-bump