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

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https://hg.mozilla.org/integration/gaia-central/rev/58792c5fbffc
Author: Fernando Rodríguez Sela <frsela@tid.es>
Desc: Merge pull request #16707 from frsela/STK/Bug975299

Bug 975299 - [Sora][STK]Can not enter to 'Refresh' Menu again after execute Refresh command., r=timdream

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https://hg.mozilla.org/integration/gaia-central/rev/760c147d61f5
Author: Fernando Rodriguez Sela <frsela@tid.es>
Desc: Bug 975299 - [Sora][STK]Can not enter to 'Refresh' Menu again after execute Refresh command.
Bumping manifests a=b2g-bump