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

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https://hg.mozilla.org/integration/gaia-central/rev/e65d109ae4bf
Author: Greg Weng <snowmantw@gmail.com>
Desc: Merge pull request #18268 from snowmantw/issue992345

Bug 992345 - [B2G][Lockscreen] Lockscreen appears horizontal instead of vertical on landscape

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https://hg.mozilla.org/integration/gaia-central/rev/db28840c217a
Author: Greg Weng <snowmantw@gmail.com>
Desc: Bug 992345 - [B2G][Lockscreen] Lockscreen appears horizontal instead of vertical on landscape
Bumping manifests a=b2g-bump