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

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https://hg.mozilla.org/integration/gaia-central/rev/a7f713158285
Author: Anthony Ricaud <anthony@ricaud.me>
Desc: Merge pull request #10344 from Rik/stk-icc-lazy-loading-879773

Bug 879773 - STK panel can't be opened by async STK commands r=frsela

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https://hg.mozilla.org/integration/gaia-central/rev/8f681e612fb1
Author: Anthony Ricaud <anthony@ricaud.me>
Desc: Bug 879773 - STK panel can't be opened by async STK commands