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

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https://hg.mozilla.org/integration/gaia-central/rev/358f71cd7a8d
Author: Arthur Chen <crh0716@gmail.com>
Desc: Merge pull request #18587 from crh0716/1000172

Bug 1000172 - Prevent scripts defining global from being removed during the optimization r=evelyn

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https://hg.mozilla.org/integration/gaia-central/rev/ab8383341033
Author: Arthur Chen <crh0716@gmail.com>
Desc: Bug 1000172 - Prevent scripts defining global from being removed during the optimization
Bumping manifests a=b2g-bump