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

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https://hg.mozilla.org/integration/gaia-central/rev/570b74e9bd67
Author: Fernando Rodríguez Sela <frsela@tid.es>
Desc: Merge pull request #23398 from frsela/STK/Bug1026556_fix

Bug 1026556 - Stk Timer Management Proactive Command error conditions not supported, r=timdream

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https://hg.mozilla.org/integration/gaia-central/rev/e64e37c44a06
Author: Fernando Rodriguez Sela <frsela@tid.es>
Desc: Bug 1026556 - Stk Timer Management Proactive Command error conditions not supported
Bumping manifests a=b2g-bump