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

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https://hg.mozilla.org/integration/gaia-2_1/rev/96ed0541a5f0
Author: Douglas Sherk <github@sherk.me>
Desc: Merge pull request #26430 from DouglasSherk/1093862-callscreen-ended-calls-v2.1

Bug 1093862 - Make Callscreen not respond to user input while there are no currently handled calls. r=gtorodelvalle, r=thills

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https://hg.mozilla.org/integration/gaia-2_1/rev/2fcd0115d1ec
Author: Doug Sherk <github@sherk.me>
Desc: Bug 1093862 - Make Callscreen not respond to user input while there are no currently handled calls. r=gtorodelvalle, r=thills
Bumping manifests a=b2g-bump