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

========

https://hg.mozilla.org/integration/gaia-central/rev/cad443c88697
Author: James Lal <james@lightsofapollo.com>
Desc: Merge pull request #25292 from lightsofapollo/tc-reruns

Bug 1084990 - Turn on automatic reruns r=me a=test-only

========

https://hg.mozilla.org/integration/gaia-central/rev/7a1171e73010
Author: James Lal <james@lightsofapollo.com>
Desc: Bug 1084990 - Turn on automatic reruns r=me a=test-only
Bumping manifests a=b2g-bump