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

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https://hg.mozilla.org/integration/gaia-central/rev/45623d27cafa
Author: lissyx <lissyx+github@lissyx.dyndns.org>
Desc: Merge pull request #19070 from lissyx/bug1006356

Bug 1006356 - Fix setting currentChannel value r=etienne_s,rik

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https://hg.mozilla.org/integration/gaia-central/rev/2432e82865d4
Author: Alexandre Lissy <lissyx+github@lissyx.dyndns.org>
Desc: Bug 1006356 - Make sure to release telephony channel
Bumping manifests a=b2g-bump