Bumping gaia.json for 2 gaia-1_2 revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-1_2/rev/f13abd2e60c4
Author: Rudy Lu <left.lu@gmail.com>
Desc: Merge pull request #13115 from RudyLu/keyboard/Bug928281-keyboard_OOP

Bug 928281 - Run keyboard app Out-of-Process (OOP). r=timdream(cherry picked from commit 9c6586d85d4340600ace0aa69f5741c5f3f67970)

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https://hg.mozilla.org/integration/gaia-1_2/rev/02b8e2fe6758
Author: EragonJ <eragonj@eragonj.me>
Desc: Merge pull request #12213 from EragonJ/bug-911681

Bug 911681 - [FTU] replace tutorial images for large device(cherry picked from commit 754d45c663b96a3a9fb5c92b4aa91c2909717970)