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

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https://hg.mozilla.org/integration/gaia-central/rev/58af1b9d568b
Author: Greg Weng <snowmantw@gmail.com>
Desc: Merge pull request #14942 from snowmantw/issue949210

Bug 949210 - [B2G][LockScreen][Camera] Activating the camera and unlocking the phone at the same time, results in user being locked out of phone.

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https://hg.mozilla.org/integration/gaia-central/rev/40ef4b61266b
Author: Greg Weng <snowmantw@gmail.com>
Desc: Bug 949210 - [B2G][LockScreen][Camera] Activating the camera and unlocking the phone at the same time, results in user being locked out of phone.