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

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https://hg.mozilla.org/integration/gaia-central/rev/0e80021034fe
Author: James Burke <jrburke@gmail.com>
Desc: Merge pull request #26429 from jrburke/bug1102554-email-update-sig-button

Bug 1102554 - [Email][Signature] Email signature preview does not update in initial setup r=asuth

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https://hg.mozilla.org/integration/gaia-central/rev/d2fc07f8ca86
Author: jrburke <jrburke@gmail.com>
Desc: Bug 1102554 - [Email][Signature] Email signature preview does not update in initial setup
Bumping manifests a=b2g-bump