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

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https://hg.mozilla.org/integration/gaia-1_3/rev/e286ae23eff6
Author: Rudy Lu <me@rudy.lu>
Desc: Merge pull request #18014 from RudyLu/keyboard/Bug992758-remove_unnecessary_unitTests

Bug 992758 - Remove the unnecessary keyboard unit tests.
r=yuren.
a=test-only.

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https://hg.mozilla.org/integration/gaia-1_3/rev/11daf31831c4
Author: Rudy Lu <me@rudy.lu>
Desc: Bug 992758 - Remove the unnecessary keyboard unit tests.
Bumping manifests a=b2g-bump