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

========

https://hg.mozilla.org/integration/gaia-central/rev/d3bc96f58622
Author: George <georgeiscoming@gmail.com>
Desc: Merge pull request #24740 from cctuan/1071775

Bug 1071775 - [Dialer] choppy animation when receiving and ending calls in landscape mode r=alivedise

========

https://hg.mozilla.org/integration/gaia-central/rev/2b4e5b1e7224
Author: cctuan <georgeiscoming@gmail.com>
Desc: Bug 1071775  - avoid reset orientation when new app is attentionWindow or callscreenWindow
Bumping manifests a=b2g-bump