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

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https://hg.mozilla.org/integration/gaia-central/rev/abc9344e86bf
Author: George <georgeiscoming@gmail.com>
Desc: Merge pull request #25430 from cctuan/1079567

Bug 1079567 - [NFC][Shrinking UI] App is rendered as a black screen if the recipient device is pulled away before the user finishes the transfer gesture.

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https://hg.mozilla.org/integration/gaia-central/rev/7fb460eca371
Author: cctuan <georgeiscoming@gmail.com>
Desc: Bug 1079567 - [NFC][Shrinking UI] App is rendered as a black screen if the recipient device is pulled away before the user finishes the transfer gesture.
Bumping manifests a=b2g-bump