Bumping gaia.json for 2 gaia-central revision(s)

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https://hg.mozilla.org/integration/gaia-central/rev/4b40bac5bfbc
Author: Evyatar Amitay <evyatron@gmail.com>
Desc: Merge pull request #10579 from EverythingMe/bugfix-helper-title

[Bug 886324] Fix helper's title not showing properly [r=crdlc]

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https://hg.mozilla.org/integration/gaia-central/rev/3eadd9354f5b
Author: Evyatar Amitay <evyatron@gmail.com>
Desc: [Bug 886324] Fix helper's title not showing properly [r=crdlc]