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

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https://hg.mozilla.org/integration/gaia-central/rev/5cc61a7a6e99
Author: Yura Zenevich <yura.zenevich@gmail.com>
Desc: Merge pull request #25478 from yzen/bug-1085413

Bug 1085413 - improved screen reader accessibility of the advanced setti...

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https://hg.mozilla.org/integration/gaia-central/rev/01738b8f44ad
Author: Yura Zenevich <yzenevich@mozilla.com>
Desc: Bug 1085413 - improved screen reader accessibility of the advanced settings view. r=mmedeiros
Bumping manifests a=b2g-bump