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

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https://hg.mozilla.org/integration/gaia-central/rev/46bafdd134e5
Author: James Burke <jrburke@gmail.com>
Desc: Merge pull request #25737 from rsajdok/bug#1091736

Bug 1091736 - [E-Mail] When the search field is empty, the edit button i... r=jrburke

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https://hg.mozilla.org/integration/gaia-central/rev/89049c21f724
Author: Robert Sajdok <robert.sajdok@gmail.com>
Desc: Bug 1091736 - [E-Mail] When the search field is empty, the edit button is not greyed out/disable
Bumping manifests a=b2g-bump