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

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https://hg.mozilla.org/integration/gaia-1_4/rev/eb0371fdd9e2
Author: AndreiH <andrei.hutusoru@softvision.ro>
Desc: Merge pull request #20302 from viorelaioia/bug_1023199_v1.4

Bug 1023199 v1.4

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https://hg.mozilla.org/integration/gaia-1_4/rev/02e32e24caf6
Author: Dave Hunt <dave.hunt@gmail.com>
Desc: Bug 1023199 - Improve gallery flick test. r=vioia
Bumping manifests a=b2g-bump