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

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https://hg.mozilla.org/integration/gaia-central/rev/f2784b078a4b
Author: Wilson Page <wilsonpage@me.com>
Desc: Merge pull request #17902 from wilsonpage/bug/988108

Bug 988108 - [camera][madai] capitalization corrections

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https://hg.mozilla.org/integration/gaia-central/rev/14b0dd615333
Author: Wilson Page <wilsonpage@me.com>
Desc: Bug 988108 - [camera][madai] capitalization corrections
Bumping manifests a=b2g-bump