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

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https://hg.mozilla.org/integration/gaia-central/rev/131735ec42ba
Author: RickyChien <ricky060709@gmail.com>
Desc: Merge pull request #16284 from RickyChien/bug-972766

Bug 972766 - Fix coverage file name disappear on console. r=@yurenju

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https://hg.mozilla.org/integration/gaia-central/rev/e2119ce95f76
Author: Ricky Chien <ricky060709@gmail.com>
Desc: Bug 972766 - Fix coverage file name disappear on console
Bumping manifests a=b2g-bump