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

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https://hg.mozilla.org/integration/gaia-central/rev/c2b47f1fa0ae
Author: gitmai <mri@tid.es>
Desc: Merge pull request #24052 from gitmai/bug-1061636-remove-icons-cc-widget

Bug 1061636 - Remove icons from the Cost Control widget FTU section
r=salva

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https://hg.mozilla.org/integration/gaia-central/rev/d74ed62203ae
Author: mai <mri@tid.es>
Desc: Bug 1061636 - Remove icons from the Cost Control widget FTU section
Bumping manifests a=b2g-bump