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

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https://hg.mozilla.org/integration/gaia-central/rev/bee4f3274c2f
Author: Carsten Book <tomcat@mozilla.com>
Desc: Merge pull request #18978 from tauzen/Bug1004967

Bug 1004967 - [NFC] NDEF TNF External Type should be handled properly in NfcManager, r=alive

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https://hg.mozilla.org/integration/gaia-central/rev/38b82873f5a9
Author: Krzysztof Mioduszewski <kmioduszewski@gmail.com>
Desc: Bug 1004967 - [NFC] NDEF TNF External Type should be handled properly in NfcManager
Bumping manifests a=b2g-bump