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

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https://hg.mozilla.org/integration/gaia-central/rev/6f98b244983d
Author: pacorampas <b.frv@tid.es>
Desc: Merge pull request #22388 from pacorampas/1047224

Bug 1047224 - [Dialer] [Keypad] Follow up for 1043318

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https://hg.mozilla.org/integration/gaia-central/rev/a9121051b527
Author: Paco Rampas <pacorampas@gmail.com>
Desc: Bug 1047224 - [Dialer] [Keypad] Follow up for 1043318
Bumping manifests a=b2g-bump