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

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https://hg.mozilla.org/integration/gaia-central/rev/cc2f9bab3e7a
Author: gitmai <mri@tid.es>
Desc: Merge pull request #21921 from gitmai/bug-997787-page-resize-settings

Bug 997787 - Page resizes when resetting usage from Settings menú
r=salva

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https://hg.mozilla.org/integration/gaia-central/rev/0f902db555a6
Author: mai <mri@tid.es>
Desc: Bug 997787 - Page resizes when resetting usage from Settings menu
Bumping manifests a=b2g-bump