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

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https://hg.mozilla.org/integration/gaia-central/rev/438a42628b22
Author: Ryan VanderMeulen <ryanvm@gmail.com>
Desc: Merge pull request #24163 from sv99/1069176

Bug 1069176 - [homescreen] unittest configurator_test.js incorrect using assert.include for testing existing object property

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https://hg.mozilla.org/integration/gaia-central/rev/767587f98b6e
Author: sv99 <sv99@inbox.ru>
Desc: Bug 1069176 - [homescreen] unittest configurator_test.js incorrect using assert.include for testing existing object property
Bumping manifests a=b2g-bump