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

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https://hg.mozilla.org/integration/gaia-central/rev/2cac0bf2c35b
Author: Michael Henretty <michael.henretty@gmail.com>
Desc: Merge pull request #23923 from mikehenrty/bug-1065421-clock

Bug 1065421 - Add theme color to clock

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https://hg.mozilla.org/integration/gaia-central/rev/23f80fc2a46e
Author: Michael Henretty <michael.henretty@gmail.com>
Desc: Bug 1065421 - Add theme color to clock
Bumping manifests a=b2g-bump