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

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https://hg.mozilla.org/integration/gaia-central/rev/40750e11c920
Author: gasolin <gasolin@gmail.com>
Desc: Merge pull request #14439 from MBRSL/bug-940824-landscape

Bug 940824 - [UITest][polish] Add landscape mode and layout adjustment, r=gasolin

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https://hg.mozilla.org/integration/gaia-central/rev/f4e45b7383d3
Author: Tom Jao <tjao@mozilla.com>
Desc: Bug 940824 - [UITest][polish] Add landscape mode and layout adjustment