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

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https://hg.mozilla.org/integration/gaia-central/rev/52fddab5675c
Author: Rudy Lu <me@rudy.lu>
Desc: Merge pull request #21602 from RudyLu/keyboard/Bug1034210_commit

Bug 1034210 - send correct keycode for non-latin IME.
r=timdream.

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https://hg.mozilla.org/integration/gaia-central/rev/40ff9d8b6369
Author: Rudy Lu <me@rudy.lu>
Desc: Bug 1034210 - send correct keycode for non-latin IME.
Bumping manifests a=b2g-bump