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

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https://hg.mozilla.org/integration/gaia-central/rev/ca7dfde6a700
Author: albertopq <albert.pastor@gmail.com>
Desc: Merge pull request #26189 from albertopq/1074332-icons-toggle

Bug 1074332 - Utility tray improved transtion r=mhenretty

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https://hg.mozilla.org/integration/gaia-central/rev/9b501b9f3bca
Author: albertopq <apastor@mozilla.com>
Desc: Bug 1074332 - Utility tray improved transtion
Bumping manifests a=b2g-bump