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

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https://hg.mozilla.org/integration/gaia-central/rev/5e58fc9a9fe2
Author: Jared Hirsch <ohai@6a68.net>
Desc: Merge pull request #21943 from 6a68/fixup-bug-1040747

Bug 1040747 - Modify erase command to use the new factoryReset. r=fabric...

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https://hg.mozilla.org/integration/gaia-central/rev/a25460f377fe
Author: Mark Goodwin <mgoodwin@mozilla.com>
Desc: Bug 1040747 - Modify erase command to use the new factoryReset. r=fabrice
Bumping manifests a=b2g-bump