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

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https://hg.mozilla.org/integration/gaia-1_4/rev/6702ea2d8a3e
Author: EragonJ <eragonj@eragonj.me>
Desc: Merge pull request #18025 from EragonJ/v1.4-bug-988445

Bug 988445 - [AirplaneModeHelper] getStatus method does not return right...

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https://hg.mozilla.org/integration/gaia-1_4/rev/2195a9ee4c25
Author: EragonJ <eragonj@eragonj.me>
Desc: Bug 988445 - [AirplaneModeHelper] getStatus method does not return rightly

Conflicts:
	apps/costcontrol/js/app.js
	apps/costcontrol/js/widget.js
Bumping manifests a=b2g-bump