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

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https://hg.mozilla.org/integration/gaia-central/rev/554341fd20a9
Author: Alive.Kuo <alegnadise@gmail.com>
Desc: Merge pull request #14233 from svic/rebase-80717b22-ShrinkUI

Bug 943179 - Integrate P2P / Shrink UI to nfc_manager, r=alive

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https://hg.mozilla.org/integration/gaia-central/rev/f5d9db3b62db
Author: Siddartha Pothapragada <Siddartha.Pothapragada@telekom.com>
Desc: Bug 943179 - Integrate P2P / Shrink UI to nfc_manager