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

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https://hg.mozilla.org/integration/gaia-central/rev/9ae8e3d4bb97
Author: Greg Weng <snowmantw@gmail.com>
Desc: Merge pull request #19947 from tauzen/Bug1018308

Bug 1018308 - [NFC] NDEF_FORMATABLE handling in NfcManager should be fixed, r=alive

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https://hg.mozilla.org/integration/gaia-central/rev/466c27577640
Author: Krzysztof Mioduszewski <kmioduszewski@gmail.com>
Desc: Bug 1018308 - [NFC] NDEF_FORMATABLE handling in NfcManager should be fixed
Bumping manifests a=b2g-bump