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

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https://hg.mozilla.org/integration/gaia-central/rev/3317c242ed1f
Author: Zac <zcampbell@mozilla.com>
Desc: Merge pull request #18226 from zacc/bug_992903

Bug 992903 - wait for lockscreen to be active after locking and also rem...

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https://hg.mozilla.org/integration/gaia-central/rev/9e350b1d011c
Author: Zac <zcampbell@mozilla.com>
Desc: Bug 992903 - wait for lockscreen to be active after locking and also remove looping workaround in lockscreen app object
Bumping manifests a=b2g-bump