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

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https://hg.mozilla.org/integration/gaia-central/rev/c1438a41ad5e
Author: Zac <zcampbell@mozilla.com>
Desc: Merge pull request #15008 from AndreiH/bug956031

Bug 956031 - Ensure geolocation UI automated test checks for presence of...

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https://hg.mozilla.org/integration/gaia-central/rev/b7e28b2ed07e
Author: Andrei Hutusoru <andreihutusoru@P5069.(none)>
Desc: Bug 956031 - Ensure geolocation UI automated test checks for presence of geolocation icon in status bar