Bumping gaia.json for 2 gaia-central revision(s)

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https://hg.mozilla.org/integration/gaia-central/rev/a9de5769866d
Author: Arthur Chen <crh0716@gmail.com>
Desc: Merge pull request #10909 from leob2g/Bug_890448_wrong_info_is_shown_when_receiving_second_call

Bug 890448 - [Dialer] When receiving second call that has withheld number, shows contact information (not withheld number token) r=etienne, a=leo+

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https://hg.mozilla.org/integration/gaia-central/rev/e7a9586e0ec9
Author: sungwoo.yoon <sungwoo.yoon@lge.com>
Desc: Bug 890448 - [Dialer] When receiving second call that has withheld number, shows contact information (not withheld number token)