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

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https://hg.mozilla.org/integration/gaia-central/rev/005a468b1d92
Author: Etienne Segonzac <etienne@segonzac.info>
Desc: Merge pull request #20625 from etiennesegonzac/bug-1026592

Bug 1026592 - Disabling edge gestures for dialogs that are unable to slide r=21

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https://hg.mozilla.org/integration/gaia-central/rev/5a7b03589996
Author: Etienne Segonzac <etienne@segonzac.info>
Desc: Bug 1026592 - Disabling edge gestures for dialogs that are unable to slide with the sheets.

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https://hg.mozilla.org/integration/gaia-central/rev/04dbdea711b3
Author: Carsten Book <tomcat@mozilla.com>
Desc: Merge pull request #20539 from azasypkin/bug-1012663-csp-compliance-initial

Bug 1012663 - [SMS] Remove inline style for CSP compliance. r=julienw

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https://hg.mozilla.org/integration/gaia-central/rev/2ef8b1b2aaee
Author: Aleh Zasypkin <azasypkin@mozilla.com>
Desc: Bug 1012663 - [SMS] Remove inline style for CSP compliance. r=julienw
Bumping manifests a=b2g-bump