Bumping gaia.json for 4 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/0cf972fdd11e
Author: Fernando Jiménez Moreno <ferjmoreno@gmail.com>
Desc: Merge pull request #22881 from ferjm/bug1049340.mobileiderroroverlay

Bug 1049340 - [Loop] Mobile Identity windows in background. r=alive

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https://hg.mozilla.org/integration/gaia-central/rev/0fdda7e05d2a
Author: Fernando Jiménez <ferjmoreno@gmail.com>
Desc: Bug 1049340 - [Loop] Mobile Identity windows in background. r=alive

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https://hg.mozilla.org/integration/gaia-central/rev/e64db1140d6f
Author: James Burke <jrburke@gmail.com>
Desc: Merge pull request #22908 from jrburke/bug1001629-email-notification-close-blank

Bug 1001629: email notification clear triggers failure in startup r=asuth

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https://hg.mozilla.org/integration/gaia-central/rev/d45cc778051b
Author: jrburke <jrburke@gmail.com>
Desc: Bug 1001629: email notification clear triggers failure in startup
Bumping manifests a=b2g-bump