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

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https://hg.mozilla.org/integration/gaia-central/rev/519ae35c24d2
Author: Germán Toro del Valle <gtorodelvalle@gmail.com>
Desc: Merge pull request #10439 from gtorodelvalle/dialer-bug-880633-no-text-in-select-all-button

Bug 880633 - [CALL LOG] Select All button flash in white and text button dissapear (r=fcampo).

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https://hg.mozilla.org/integration/gaia-central/rev/da9a41e8594f
Author: Germán Toro del Valle <gtorodelvalle@gmail.com>
Desc: Bug 880633 - [CALL LOG] Select All button flash in white and text button dissapear.