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

========

https://hg.mozilla.org/integration/gaia-central/rev/14bc5471ec54
Author: Fernando Rodríguez Sela <frsela@tid.es>
Desc: Merge pull request #16984 from frsela/STK/Bug873397

Bug 873397 - [Buri][STK]idle mode text should still display after view, r=alive

========

https://hg.mozilla.org/integration/gaia-central/rev/eb95185c89c7
Author: Fernando Rodriguez Sela <frsela@tid.es>
Desc: Bug 873397 - [Buri][STK]idle mode text should still display after view
Bumping manifests a=b2g-bump