Bumping gaia.json for 6 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/05c48b28137f
Author: Timothy Guan-tin Chien <timdream@gmail.com>
Desc: Merge pull request #20210 from timdream/keyboard-transition-in

Bug 1017327 - Don't resize app right way if we are transitioning, r=rudyl

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https://hg.mozilla.org/integration/gaia-central/rev/fd53b6642ba4
Author: Timothy Guan-tin Chien <timdream@gmail.com>
Desc: Bug 1017327 - Don't resize app right way if we are transitioning

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https://hg.mozilla.org/integration/gaia-central/rev/bcea6edd715d
Author: Francisco Jordano <arcturus@ardeenelinfierno.com>
Desc: Merge pull request #20028 from arcturus/bug-1017441

Bug 1017441 - [Gaia][Contacts] Contact screen scroll beyond 'A ~ Z-#' shows blank preview screen. r=jmcf

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https://hg.mozilla.org/integration/gaia-central/rev/189e3e2e6cca
Author: Francisco Jordano <fjordano@mozilla.com>
Desc: Bug 1017441 - [Gaia][Contacts] Contact screen scroll beyond 'A ~ Z-#' shows blank preview screen.

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https://hg.mozilla.org/integration/gaia-central/rev/92d54129151d
Author: Rudy Lu <me@rudy.lu>
Desc: Merge pull request #19708 from flodolo/bug1009931

Bug 1009931 - [Keyboard] Remove unnecessary "S" from sr-Cyrl keyboard.
r=rudylu

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https://hg.mozilla.org/integration/gaia-central/rev/3f867425e06a
Author: Francesco Lodolo (:flod) <flod@lodolo.net>
Desc: Bug 1009931 - [Keyboard] Remove unnecessary "S" from sr-Cyrl keyboard
Bumping manifests a=b2g-bump