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

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https://hg.mozilla.org/integration/gaia-central/rev/c1280c482bf1
Author: pacorampas <b.frv@tid.es>
Desc: Merge pull request #26589 from pacorampas/1096916

Bug 1096916 - [Dialer][Callscreen] The direction icon is incorrect when is hanging up a hold call r=gtorodelvalle

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https://hg.mozilla.org/integration/gaia-central/rev/45881983c094
Author: Paco Rampas <pacorampas@gmail.com>
Desc: Bug 1096916 - [Dialer][Callscreen] The direction icon is incorrect when is hanging up a hold call
Bumping manifests a=b2g-bump