Bumping gaia.json for 4 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/fae12350d78c
Author: Greg Weng <snowmantw@gmail.com>
Desc: Merge pull request #25437 from snowmantw/bug1086175

Bug 1086175 - [Flame][KK]After full flash/reset phone, first time to

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https://hg.mozilla.org/integration/gaia-central/rev/7de126c1df38
Author: Greg Weng <snowmantw@gmail.com>
Desc: Bug 1086175 - [Flame][KK]After full flash/reset phone, first time to
pair bluetooth with another phone will show notification then pair
failed

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https://hg.mozilla.org/integration/gaia-central/rev/42a93415aa1e
Author: George <georgeiscoming@gmail.com>
Desc: Merge pull request #25485 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/3e3e81feb7de
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