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

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https://hg.mozilla.org/integration/gaia-1_4/rev/a80d092753cc
Author: EragonJ <eragonj@eragonj.me>
Desc: Merge pull request #18976 from EragonJ/v1.4-bug-994533-new

Bug 994533 - [Sora][WIFI] The return button display error in wifi page

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https://hg.mozilla.org/integration/gaia-1_4/rev/3a6b36187770
Author: EragonJ <eragonj@eragonj.me>
Desc: Bug 994533 - [Sora][WIFI] The return button display error in wifi page
Bumping manifests a=b2g-bump