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

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https://hg.mozilla.org/integration/gaia-central/rev/198ce093d43e
Author: Timothy Guan-tin Chien <timdream@gmail.com>
Desc: Merge pull request #23258 from timdream/keyboard-switch-fail

Bug 1054184 - Don't clear active targets right away, r=rudyl

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https://hg.mozilla.org/integration/gaia-central/rev/e2191e37f5aa
Author: Timothy Guan-tin Chien <timdream@gmail.com>
Desc: Bug 1054184 - Don't clear active targets right away
Bumping manifests a=b2g-bump