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

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https://hg.mozilla.org/integration/gaia-central/rev/45471443b54c
Author: albertopq <albert.pastor@gmail.com>
Desc: Merge pull request #25414 from albertopq/1067913-pull-ambient-indicator

Bug 1067913 - Ambient indicator pull down r=alive

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https://hg.mozilla.org/integration/gaia-central/rev/0552c5f57f24
Author: albertopq <apastor@mozilla.com>
Desc: Bug 1067913 - Ambient indicator pull down
Bumping manifests a=b2g-bump