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

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https://hg.mozilla.org/integration/gaia-central/rev/d5db104074da
Author: Ryan VanderMeulen <rvandermeulen@mozilla.com>
Desc: Merge pull request #18900 from tauzen/Bug1000981

Bug 1000981 - [NFC] NfcManager handleNdefMessage tests, NfcUtils tests moved to separate file, r=alive

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https://hg.mozilla.org/integration/gaia-central/rev/0b9cd698f317
Author: Krzysztof Mioduszewski <kmioduszewski@gmail.com>
Desc: Bug 1000981 - [NFC] NfcManager handleNdefMessage tests, NfcUtils tests moved to separate file
Bumping manifests a=b2g-bump