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

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https://hg.mozilla.org/integration/gaia-central/rev/f37899cc650d
Author: Francisco Jordano <arcturus@ardeenelinfierno.com>
Desc: Merge pull request #19826 from arcturus/bug-1002464

Bug 1002464 - [Contacts][Follow up] Add test for new mozl10n.once call

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https://hg.mozilla.org/integration/gaia-central/rev/01a7d7c27642
Author: Francisco Jordano <arcturus@ardeenelinfierno.com>
Desc: Bug 1002464 - [Contacts][Follow up] Add test for new mozl10n.once call
Bumping manifests a=b2g-bump