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

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https://hg.mozilla.org/integration/gaia-central/rev/9c98cf6ebabf
Author: Timothy Guan-tin Chien <timdream@gmail.com>
Desc: Merge pull request #25305 from timdream/value-selector-focus

Bug 1085233 - Remove app.focus() call from Value Selector, r=alive

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https://hg.mozilla.org/integration/gaia-central/rev/e5fcd2baa697
Author: Timothy Guan-tin Chien <timdream@gmail.com>
Desc: Bug 1085233 - Remove app.focus() call from Value Selector
Bumping manifests a=b2g-bump