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

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https://hg.mozilla.org/integration/gaia-central/rev/1339e01a47d2
Author: Jared Hirsch <ohai@6a68.net>
Desc: Merge pull request #19503 from 6a68/bug-1003201-enable-text-selection

Bug 1003201 - Enable text selection within FxA input fields

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https://hg.mozilla.org/integration/gaia-central/rev/91c197daa96b
Author: Jared Hirsch <ohai@6a68.net>
Desc: Bug 1003201 - Enable text selection within FxA input fields. r=ferjm
Bumping manifests a=b2g-bump