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

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https://hg.mozilla.org/integration/gaia-central/rev/995979ab5d82
Author: Sam Foster <sam@sam-i-am.com>
Desc: Merge pull request #24127 from ddrmanxbxfr/bug_1062829

Bug 1062829 - Converted Json methods from XHR to LazyLoader in FTU APP. r=sfoster

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https://hg.mozilla.org/integration/gaia-central/rev/423b744a533e
Author: Mathieu Rhéaume <mathieu@codingrhemes.com>
Desc: Bug 1062829 - Converted Json methods from XHR to LazyLoader in the FTU APP
Bumping manifests a=b2g-bump