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

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https://hg.mozilla.org/integration/gaia-central/rev/fc4627fb8dc6
Author: Fernando Rodríguez Sela <frsela@tid.es>
Desc: Merge pull request #18322 from frsela/STK/Bug980670

Bug 980670 - [BURI] 'SIM 1' shown under STK carrier label. r=vingtetun

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https://hg.mozilla.org/integration/gaia-central/rev/7a5f9557fbc2
Author: Fernando Rodriguez Sela <frsela@tid.es>
Desc: Bug 980670 - [BURI] 'SIM 1' shown under STK carrier label
Bumping manifests a=b2g-bump