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

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https://hg.mozilla.org/integration/gaia-central/rev/c03b7beb330a
Author: James Burke <jrburke@gmail.com>
Desc: Merge pull request #23542 from asutherland/bug1060922-email-sig-upgrade-null

Bug 1060922 - [email] can't open the account settings. r=asuth

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https://hg.mozilla.org/integration/gaia-central/rev/967a6083b7b4
Author: jrburke <jrburke@gmail.com>
Desc: Bug 1060922 - [email] can't open the account settings. r=asuth
Bumping manifests a=b2g-bump