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

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https://hg.mozilla.org/integration/gaia-2_1/rev/30b1d093151d
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Merge pull request #25531 from albertopq/1088678-fix-test-2.1

Bug 1088678 - Fix 2.1 integration tests cbs a=testonly r=kgrandon

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https://hg.mozilla.org/integration/gaia-2_1/rev/ce64d7758f0d
Author: albertopq <apastor@mozilla.com>
Desc: Bug 1088678 - Fix 2.1 integration tests cbs
Bumping manifests a=b2g-bump