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

========

https://hg.mozilla.org/integration/gaia-central/rev/9f54b12ae0a4
Author: Fernando Rodríguez Sela <frsela@tid.es>
Desc: Merge pull request #19369 from frsela/STK/Bug1009254

Bug 1009254 - [STK] No option on UI  to terminate/abort the proactive session, r=vingtetun

========

https://hg.mozilla.org/integration/gaia-central/rev/77375c3fe587
Author: Fernando Rodriguez Sela <frsela@tid.es>
Desc: Bug 1009254 - [STK] No option on UI  to terminate/abort the proactive session
Bumping manifests a=b2g-bump