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

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https://hg.mozilla.org/integration/gaia-2_1/rev/af9f9895a985
Author: Chris Lord <chrislord.net@gmail.com>
Desc: Merge pull request #23909 from Cwiiis/bug1063487-2.1-backport

Bug 1063487 - Fix Calendar oauth window. r=mmedeiros

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https://hg.mozilla.org/integration/gaia-2_1/rev/92ab104fe01c
Author: Chris Lord <chrislord.net@gmail.com>
Desc: Bug 1063487 - Fix Calendar oauth window. r=mmedeiros
Bumping manifests a=b2g-bump