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

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https://hg.mozilla.org/integration/gaia-central/rev/6d436e7dd643
Author: Rudy Lu <me@rudy.lu>
Desc: Merge pull request #26285 from RudyLu/keyboard/Bug1100777-LayoutPageView

Bug 1100777 - Create LayoutPageView component.
r=timdream.

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https://hg.mozilla.org/integration/gaia-central/rev/1597a36ffd9f
Author: Rudy Lu <me@rudy.lu>
Desc: Bug 1100777 - Create LayoutPageView component.
 - Separate page view creation out of render.js.
 - Modify HandwritingPadView to comform to ViewClass interface.
Bumping manifests a=b2g-bump