Bumping gaia.json for 4 gaia revision(s) a=gaia-bump

========

https://hg.mozilla.org/integration/gaia-central/rev/9f0418e31bae
Author: Douglas Sherk <github@sherk.me>
Desc: Merge pull request #24331 from jpruden92/bug1065302-callscreen

Bug 1065302 - Contact phone numbers and phone type should always be separated with a comma r=drs

========

https://hg.mozilla.org/integration/gaia-central/rev/77188fb11bd4
Author: jprudencio <jpruden92@gmail.com>
Desc: Bug 1065302 - Contact phone numbers and phone type should always be separated with a comma

========

https://hg.mozilla.org/integration/gaia-central/rev/62075dbb3c06
Author: Justin D'Arcangelo <justindarc@gmail.com>
Desc: Merge pull request #24269 from hyunacho/bug1066015

Bug 1066015 - [Camera] black screen when press power key as soon as you ...

========

https://hg.mozilla.org/integration/gaia-central/rev/68ee2c6e0bc7
Author: hyuna.cho <hyuna.cho@lge.com>
Desc: Bug 1066015 - [Camera] black screen when press power key as soon as you open a camera app
Bumping manifests a=b2g-bump