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

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https://hg.mozilla.org/integration/gaia-central/rev/722dcacafb69
Author: Jose Antonio Olivera Ortega <josea.olivera@gmail.com>
Desc: Merge pull request #16720 from jaoo/969298-2

Bug 969298 - [Gaia] Need to add setting menus for 'dun' and 'ims' apn types. r=kaze

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https://hg.mozilla.org/integration/gaia-central/rev/25264c9d5e8a
Author: Jose Antonio Olivera Ortega <josea.olivera@gmail.com>
Desc: Bug 969298 - [Gaia] Need to add setting menus for 'dun' and 'ims' apn types
Bumping manifests a=b2g-bump