Bumping gaia.json for 3 gaia revision(s) a=gaia-bump

========

https://hg.mozilla.org/integration/gaia-central/rev/bd4ba5f1f35c
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Revert "Bug 962918 - Update gaia-node-modules to v1.1.7"

This reverts commit f472e0e85d5684b2ddeacb4a6f220c77f423e228.

========

https://hg.mozilla.org/integration/gaia-central/rev/c57a992f4a5e
Author: Justin D'Arcangelo <justindarc@gmail.com>
Desc: Merge pull request #18462 from justindarc/bug993686

Bug 993686 - [B2G][Camera] - Tapping repeatedly on capture button while ...

========

https://hg.mozilla.org/integration/gaia-central/rev/0f0f1574ea23
Author: Justin D'Arcangelo <justindarc@gmail.com>
Desc: Bug 993686 - [B2G][Camera] - Tapping repeatedly on capture button while setting wallpaper can permanently freeze the camera app
Bumping manifests a=b2g-bump