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

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https://hg.mozilla.org/integration/gaia-central/rev/d82c5191403b
Author: Yuren Ju <yurenju@gmail.com>
Desc: Merge pull request #15542 from darkowlzz/BUG957927

Bug 957927 - b2g.neterror.url value set in Gaia build script r=@yurenju

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https://hg.mozilla.org/integration/gaia-central/rev/cd9a5081d27f
Author: sunny <indiasuny000@gmail.com>
Desc: Bug 957927 - b2g.neterror.url value set in Gaia build script
Bumping manifests a=b2g-bump