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

========

https://hg.mozilla.org/integration/gaia-central/rev/9fffcfaa0e10
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Merge pull request #24119 from eliperelman/bug-1067441

Bug 1067441 - Enable SHB on secured lockscreen apps

========

https://hg.mozilla.org/integration/gaia-central/rev/7e021b57410a
Author: Eli Perelman <eli@eliperelman.com>
Desc: Bug 1067441 - Enable SHB on secured lockscreen apps
Bumping manifests a=b2g-bump