Bumping gaia.json for 2 gaia-central revision(s) a=gaia-bump
Truncated some number of revisions since the previous bump.

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https://hg.mozilla.org/integration/gaia-central/rev/28db9b0d9d78
Author: Marcus Cavanaugh <m@mcav.com>
Desc: Merge pull request #14373 from mcav/land-945669

Bug 945669 - [email/POP3] Make FolderStorage.sliceOpenMostRecent not trigger connection establishment for POP3 folders other than the inbox; clean up tests, r=asuth

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https://hg.mozilla.org/integration/gaia-central/rev/5ba059d3d99c
Author: Marcus Cavanaugh <m@mcav.com>
Desc: Bug 945669 - [email/POP3] Make FolderStorage.sliceOpenMostRecent not trigger connection establishment for POP3 folders other than the inbox; clean up tests, r=asuth