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

========

https://hg.mozilla.org/integration/gaia-central/rev/8287d61d7804
Author: Jose M. Cantera <jmcanterafonseca@gmail.com>
Desc: Merge pull request #22405 from ADLR-es/fix-bug-1045521

Bug 1045521 - [Contacts-FTU] Change the IAC mechanism by a datastore in ...

========

https://hg.mozilla.org/integration/gaia-central/rev/9d7c0405d0b0
Author: Adrián de la Rosa <hola@adlr.es>
Desc: Bug 1045521 - [Contacts-FTU] Change the IAC mechanism by a datastore in order to propagate access tokens between FTU and Contacts
Bumping manifests a=b2g-bump