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

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https://hg.mozilla.org/integration/gaia-central/rev/1cd8c193bb0f
Author: Zac <zcampbell@mozilla.com>
Desc: Merge pull request #14541 from viorelaioia/bug_948440

Bug 948440 - is_gps_enabled checkbox logic is outdated

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https://hg.mozilla.org/integration/gaia-central/rev/8685b0c3a83f
Author: Viorela Ioia <viorelaioia@gmail.com>
Desc: Bug 948440 - is_gps_enabled checkbox logic is outdated