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

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https://hg.mozilla.org/integration/gaia-central/rev/b07381fd8550
Author: Cristian Rodriguez <crdlc@tid.es>
Desc: Merge pull request #24142 from crdlc/bug-1068611

Bug 1068611 - [Contacts] [Regression] When importing contacts from Gmail...

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https://hg.mozilla.org/integration/gaia-central/rev/ec4e7cb14067
Author: crdlc <crdlc@tid.es>
Desc: Bug 1068611 - [Contacts] [Regression] When importing contacts from Gmail the last imported date is not updated
Bumping manifests a=b2g-bump