Bumping gaia.json for 2 gaia-1_2 revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-1_2/rev/4b95d9560803
Author: Rex KM Lee <rexboy@mozilla.com>
Desc: Merge pull request #14113 from rexboy7/fix-bug933153

Bug 933153 - hold active call before making another call. r=etienne
(cherry picked from commit 286be9eb5ffc0e879d05703f0d291b5efbd818e6)

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https://hg.mozilla.org/integration/gaia-1_2/rev/b76c32c3df65
Author: Cristian Rodriguez <crdlc@tid.es>
Desc: Merge pull request #14135 from crdlc/bug-942294

Bug 942294 - unable swipe from e.me to apps page if swipe starts at edge...
(cherry picked from commit 833afc850d7a62a15ff1b178db806210f2ac839f)