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

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https://hg.mozilla.org/integration/gaia-central/rev/860903ef0aed
Author: Rudy Lu <me@rudy.lu>
Desc: Merge pull request #19313 from RudyLu/keyboard/Bug1003649-IME_selector_withoutSettingsButton

Bug 1003649 - [Keyboard UX update] Change IME selector to use value
r=timdream.

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https://hg.mozilla.org/integration/gaia-central/rev/bf1d2b154662
Author: Rudy Lu <me@rudy.lu>
Desc: Bug 1003649 - [Keyboard UX update] Change IME selector to use value
selector style instead of action menu style.
Bumping manifests a=b2g-bump