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

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https://hg.mozilla.org/integration/gaia-central/rev/b60aedd37a5c
Author: Guillaume C. Marty <gmarty@users.noreply.github.com>
Desc: Merge pull request #26883 from gmarty/Bug-1093958-Lockscreen-only-displays-battery-icon-not-other-icons

Bug 1093958 - Lockscreen only displays battery icon, not other icons

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https://hg.mozilla.org/integration/gaia-central/rev/079728f35f27
Author: Guillaume Marty <edo999@gmail.com>
Desc: Bug 1093958 - Lockscreen only displays battery icon, not other icons
Bumping manifests a=b2g-bump