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

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https://hg.mozilla.org/integration/gaia-central/rev/85ca4afa5bff
Author: evanxd <itoyxd@gmail.com>
Desc: Merge pull request #13578 from evanxd/bug-932605

Bug 932605 - [calendar] caldav server for integration testing

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https://hg.mozilla.org/integration/gaia-central/rev/d774b05ee22d
Author: Evan Xd <itoyxd@gmail.com>
Desc: Bug 932605 - Add CalDAV server for integration testing. r=gaye
Bumping manifests a=b2g-bump