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

========

https://hg.mozilla.org/integration/gaia-central/rev/676e1e6dcbf2
Author: Zibi Braniecki <zbigniew.braniecki@gmail.com>
Desc: Merge pull request #22864 from zbraniecki/1053629-simplify-settextcontent

Bug 1053629 - Reduce complexity of setTextContent. r=stas

========

https://hg.mozilla.org/integration/gaia-central/rev/3ed0ddfadf4e
Author: Zbigniew Braniecki <gandalf@mozilla.com>
Desc: Bug 1053629 - Reduce complexity of setTextContent
Bumping manifests a=b2g-bump