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

========

https://hg.mozilla.org/integration/gaia-central/rev/516e28f1bccf
Author: Alive.Kuo <alegnadise@gmail.com>
Desc: Merge pull request #18636 from alivedise/bugzilla/997290_v1.5/cardview-malfunction

Bug 997290 - Dismiss keyboard on cardview is opening, r=etienne

========

https://hg.mozilla.org/integration/gaia-central/rev/080710a0298e
Author: Alive Kuo <alegnadise@gmail.com>
Desc: Bug 997290 - Dismiss keyboard on cardview is opening
Bumping manifests a=b2g-bump