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

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https://hg.mozilla.org/integration/gaia-central/rev/eff731440e62
Author: Arthur Chen <crh0716@gmail.com>
Desc: Merge pull request #26347 from crh0716/1102300

Bug 1102300 - Initialize moz mobile connections before init r=eragonj

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https://hg.mozilla.org/integration/gaia-central/rev/7fa301e8bf8e
Author: Arthur Chen <crh0716@gmail.com>
Desc: Bug 1102300 - Initialize moz mobile connections before init
Bumping manifests a=b2g-bump