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

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https://hg.mozilla.org/integration/gaia-central/rev/c1e3b7c18e8f
Author: Askeing Yen (fyen) <askeing@gmail.com>
Desc: Merge pull request #14087 from zacc/bug_943595

Bug 943595 - Add explicit wait to test_context_menu_picker.py r=Askeing

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https://hg.mozilla.org/integration/gaia-central/rev/ff46e958275b
Author: Zac Campbell <zcampbell@mozilla.com>
Desc: Bug 943595 - Add explicit wait to test_context_menu_picker.py r=Askeing