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

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https://hg.mozilla.org/integration/gaia-central/rev/ddc235c1b836
Author: Min-Zhong "John" Lu <mnjul@users.noreply.github.com>
Desc: Merge pull request #20020 from gasolin/issue-1020387

Bug 1020387 - [lockscreen] typo of notifications-lockscreen-container

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https://hg.mozilla.org/integration/gaia-central/rev/88f1ea45f780
Author: gasolin <gasolin@gmail.com>
Desc: Bug 1020387 - [lockscreen] typo of notifications-lockscreen-container
Bumping manifests a=b2g-bump