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

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https://hg.mozilla.org/integration/gaia-central/rev/ed87d8fb6eff
Author: George <georgeiscoming@gmail.com>
Desc: Merge pull request #24640 from cctuan/1068479

Bug 1068479 - Copy paste toolbox has no hit state

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https://hg.mozilla.org/integration/gaia-central/rev/3a6bae57eff4
Author: cctuan <georgeiscoming@gmail.com>
Desc: Bug 1068479 - Copy paste toolbox has no hit state

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https://hg.mozilla.org/integration/gaia-central/rev/ebba46a6c0ea
Author: Cristian Rodriguez <crdlc@tid.es>
Desc: Merge pull request #24651 from crdlc/bug-1073646

Bug 1073646 - [Settings] Clear bookmarks data does not work properly

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https://hg.mozilla.org/integration/gaia-central/rev/5401086d1701
Author: crdlc <crdlc@tid.es>
Desc: Bug 1073646 - [Settings] "Clear bookmarks data" does not work properly
Bumping manifests a=b2g-bump