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

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https://hg.mozilla.org/integration/gaia-central/rev/0da53a2efaa6
Author: John Hu <johu@mozilla.com>
Desc: Merge pull request #27002 from huchengtw-moz/bug-1115455-set-focus-after-iframe-loaded

Bug 1115455 - [Stingray][System] focus app window while the app window i..., r=rexboy

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https://hg.mozilla.org/integration/gaia-central/rev/dc3d5af6d5f2
Author: John Hu <johu@mozilla.com>
Desc: Bug 1115455 - [Stingray][System] focus app window while the app window is fully loaded
Bumping manifests a=b2g-bump