Bumping gaia.json for 2 gaia-1_2 revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-1_2/rev/95635b6fc64d
Author: Zac <zcampbell@mozilla.com>
Desc: Merge pull request #12939 from teodosia/remove-maps

Bug 928394 - Remove test_homescreen_launch_here_maps.py from aurora

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https://hg.mozilla.org/integration/gaia-1_2/rev/fae849e8ded1
Author: Teodosia Pop <teodosia.pop@gmail.com>
Desc: Bug 928394 - Remove test_homescreen_launch_here_maps.py from aurora