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

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https://hg.mozilla.org/integration/gaia-central/rev/70442e4063c9
Author: Jose M. Cantera <jmcanterafonseca@gmail.com>
Desc: Merge pull request #25174 from jmcanterafonseca/title_contacts

Bug 1079795 - We tap Cancel when contacts are deleting,all contacts are ...

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https://hg.mozilla.org/integration/gaia-central/rev/4099c006b3b5
Author: Jose M. Cantera <jmcanterafonseca@gmail.com>
Desc: Bug 1079795 - We tap Cancel when contacts are deleting,all contacts are checked,but the Contacts is displayed in title.(5/5)
Bumping manifests a=b2g-bump