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

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https://hg.mozilla.org/integration/gaia-central/rev/0faae1881b60
Author: Greg Weng <snowmantw@gmail.com>
Desc: Merge pull request #25599 from snowmantw/bug1075389

Bug 1075389 - [LockScreen] With passcode, slide to secure camera would n...

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https://hg.mozilla.org/integration/gaia-central/rev/0a42f088378d
Author: Greg Weng <snowmantw@gmail.com>
Desc: Bug 1075389 - [LockScreen] With passcode, slide to secure camera would not restore the slider
Bumping manifests a=b2g-bump