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

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https://hg.mozilla.org/integration/gaia-central/rev/7a44d0a01a80
Author: Salvador de la Puente González <salva@unoyunodiez.com>
Desc: Merge pull request #22517 from lodr/bug-1048772-prevent-incorrect-values

Bug 1048772 - Incorrect value in "app.update.battery-threshold.plugged" and "app.update.battery-threshold.unplugged" are allowed
r=etienne

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https://hg.mozilla.org/integration/gaia-central/rev/d598a3f51c3b
Author: Salvador de la Puente <salva@unoyunodiez.com>
Desc: Bug 1048772 - Incorrect value in "app.update.battery-threshold.plugged" and "app.update.battery-threshold.unplugged" are allowed
Bumping manifests a=b2g-bump