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

========

https://hg.mozilla.org/integration/gaia-central/rev/02286592b5a6
Author: RickyChien <RickyChien@users.noreply.github.com>
Desc: Merge pull request #25512 from RickyChien/bug-969215

Bug 969215 - Execute |make| should only build specific apps we modified r=@cctuan, @ochameau

========

https://hg.mozilla.org/integration/gaia-central/rev/1d7c00f36476
Author: Ricky Chien <ricky060709@gmail.com>
Desc: Bug 969215 - Execute |make| should only build specific apps we modified
Bumping manifests a=b2g-bump