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

========

https://hg.mozilla.org/integration/gaia-central/rev/2064f98a9c27
Author: Anthony Ricaud <anthony@ricaud.me>
Desc: Merge pull request #10467 from Rik/unbreak-birch-884406

Bug 884406 - Check that we have a .git directory before copying r=julienw

========

https://hg.mozilla.org/integration/gaia-central/rev/0ec09b86a8f8
Author: Anthony Ricaud <anthony@ricaud.me>
Desc: Bug 884406 - Check that we have a .git directory before copying