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

========

https://hg.mozilla.org/integration/gaia-2_1/rev/f1af21137050
Author: Greg Weng <snowmantw@gmail.com>
Desc: Merge pull request #24551 from snowmantw/issue1073745-v2.1

Bug 1073745 - [Lockscreen] Unlock to camera twice brings a blank screen.

========

https://hg.mozilla.org/integration/gaia-2_1/rev/c7ddf25273be
Author: Greg Weng <snowmantw@gmail.com>
Desc: Bug 1073745 - [Lockscreen] Unlock to camera twice brings a blank screen.
Bumping manifests a=b2g-bump