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

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https://hg.mozilla.org/integration/gaia-central/rev/f58559eaa6f7
Author: evanxd <itoyxd@gmail.com>
Desc: Merge pull request #23702 from evanxd/bug-1061296

Bug 1061296 - Keep event details element right shift 2rem from event time element

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https://hg.mozilla.org/integration/gaia-central/rev/8284899505ca
Author: Evan Xd <itoyxd@gmail.com>
Desc: Bug 1061296 - Set a same and fixed position for event details elements in 12 and 24 hour format
Bumping manifests a=b2g-bump