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

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https://hg.mozilla.org/integration/gaia-central/rev/dbb19d7d2c35
Author: Jose Antonio Olivera Ortega <josea.olivera@gmail.com>
Desc: Merge pull request #16492 from jaoo/963225

Bug 963225 - JavascriptException: TypeError: this._iccCard is null. r=kaze

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https://hg.mozilla.org/integration/gaia-central/rev/66b341f17bf8
Author: Jose Antonio Olivera Ortega <josea.olivera@gmail.com>
Desc: Bug 963225 - JavascriptException: TypeError: this._iccCard is null
Bumping manifests a=b2g-bump