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

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https://hg.mozilla.org/integration/gaia-central/rev/24b3eb081739
Author: Zac <zcampbell@mozilla.com>
Desc: Merge pull request #13355 from bebef1987/fix_contacts_photo

Bug 934523 - Fix add photo to contact test

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https://hg.mozilla.org/integration/gaia-central/rev/10a07de22473
Author: Bebe <bebe@mozilla.ro>
Desc: Bug 934523 - Fix add photo to contact test