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

========

https://hg.mozilla.org/integration/gaia-central/rev/ab3086981caf
Author: Zibi Braniecki <zbigniew.braniecki@gmail.com>
Desc: Merge pull request #22804 from zbraniecki/1052861-speed-up-DOM-l10n-in-non-pretranslated-case

Bug 1052861 - Speed up DOM l10n in non-pretranslated case. r=me

========

https://hg.mozilla.org/integration/gaia-central/rev/6c183f9794a1
Author: Zbigniew Braniecki <gandalf@mozilla.com>
Desc: Bug 1052861 - Speed up DOM l10n in non-pretranslated case
Bumping manifests a=b2g-bump