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

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https://hg.mozilla.org/integration/gaia-central/rev/2cc445d3e8f4
Author: Eitan Isaacson <eitan@monotonous.org>
Desc: Merge pull request #17601 from eeejay/bug-987389

Bug 987389 - [Clock] Make time picker for timer accessible. r=mcav

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https://hg.mozilla.org/integration/gaia-central/rev/0655d62e7c02
Author: Eitan Isaacson <eitan@monotonous.org>
Desc: Bug 987389 - [Clock] Make time picker for timer accessible.
Bumping manifests a=b2g-bump