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

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https://hg.mozilla.org/integration/gaia-central/rev/e38478b814fe
Author: Greg Weng <snowmantw@gmail.com>
Desc: Merge pull request #22707 from snowmantw/issue1037284

Bug 1037284 - [NFC] Screen shows wired and NFC function broken when clic...

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https://hg.mozilla.org/integration/gaia-central/rev/f1cf997ae183
Author: Greg Weng <snowmantw@gmail.com>
Desc: Bug 1037284 - [NFC] Screen shows wired and NFC function broken when click home button while initial shrinking UI
Bumping manifests a=b2g-bump