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

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https://hg.mozilla.org/integration/gaia-central/rev/0c5fca6d0896
Author: Michael Henretty <michael.henretty@gmail.com>
Desc: Merge pull request #22748 from mikehenrty/bug-1041903-dialer-theme

Bug 1041903 - Fix theme color for dialer

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https://hg.mozilla.org/integration/gaia-central/rev/2a7d0dee72a7
Author: Michael Henretty <michael.henretty@gmail.com>
Desc: Bug 1041903 - Fix theme color for dialer
Bumping manifests a=b2g-bump