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

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https://hg.mozilla.org/integration/gaia-central/rev/f12eafe45599
Author: Douglas Sherk <github@sherk.me>
Desc: Merge pull request #22181 from DouglasSherk/1021478-dialer-bluetooth-call

Bug 1021478 - [Dialer] Call on the last used SIM for this contact/number when hitting the Bluetooth call button. r=Rik

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https://hg.mozilla.org/integration/gaia-central/rev/c14e45fd81d2
Author: DouglasSherk <github@sherk.me>
Desc: Bug 1021478 - [Dialer] Call on the last used SIM for this contact/number when hitting the Bluetooth call button. r=Rik
Bumping manifests a=b2g-bump