Bumping gaia.json for 4 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/5fe45ca2f66a
Author: Andrew Sutherland <asutherland@asutherland.org>
Desc: Merge pull request #26792 from asutherland/email-mozilla-com-as-gmail

Bug 1111662 - [email/autoconfig] Copy gmail.com autoconfig entry to mozilla.com to compensate for mozilla switch to gmail. r=jrburke

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https://hg.mozilla.org/integration/gaia-central/rev/1f0a5c054067
Author: Andrew Sutherland <asutherland@asutherland.org>
Desc: Bug 1111662 - [email/autoconfig] Copy gmail.com autoconfig entry to mozilla.com to compensate for mozilla switch to gmail

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https://hg.mozilla.org/integration/gaia-central/rev/321d5a39986e
Author: Sam Foster <sam@sam-i-am.com>
Desc: Merge pull request #26749 from sfoster/tm-visibility-warning-bug-1107139

Bug 1110932 - Add default button visibility props to Card.prototype. r=etienne

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https://hg.mozilla.org/integration/gaia-central/rev/7dbe9fd16142
Author: Sam Foster <sfoster@mozilla.com>
Desc: Bug 1110932 - Add default button visibility props to Card.prototype. r=etienne
Bumping manifests a=b2g-bump