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

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https://hg.mozilla.org/integration/gaia-central/rev/0f8930a9ed9c
Author: Amir Nissim <amirnissim@gmail.com>
Desc: Merge pull request #12533 from EverythingMe/912386-apps-hold-click

[Bug 912386] fix long-tap on app won't prevent normal click [r=crdlc]

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https://hg.mozilla.org/integration/gaia-central/rev/bde183b340cd
Author: Evyatar Amitay <evyatron@gmail.com>
Desc: [Bug 912386] fix long-tap on app won't prevent normal click [r=crdlc]