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

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https://hg.mozilla.org/integration/gaia-central/rev/4142a1c96514
Author: Michael Henretty <michael.henretty@gmail.com>
Desc: Merge pull request #24356 from gauravmittal1995/css

#1065753 Remove sb-icon-notification from statusbar stylesheet R=gauravmittal1995

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https://hg.mozilla.org/integration/gaia-central/rev/27501d00cd8c
Author: Gaurav Mittal <gaurav.mittal@students.iiit.ac.in>
Desc: #1065753 Remove sb-icon-notification from statusbar stylesheet R=gauravmittal1995
Bumping manifests a=b2g-bump