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

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https://hg.mozilla.org/integration/gaia-central/rev/625162a7e0c6
Author: Guillaume C. Marty <gmarty@users.noreply.github.com>
Desc: Merge pull request #24710 from gmarty/Bug-1071512-Overlapping-status-bar-icons

Bug 1071512 - Overlapping status bar icons

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https://hg.mozilla.org/integration/gaia-central/rev/0d5ff13ffe8f
Author: Guillaume Marty <edo999@gmail.com>
Desc: Bug 1071512 - Overlapping status bar icons
Bumping manifests a=b2g-bump