Bumping gaia.json for 3 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/644729ef0d87
Author: George <georgeiscoming@gmail.com>
Desc: Merge pull request #26049 from cctuan/1095774

Bug 1095774 - [Text Selection] Choosing "select all" when only 1 word is displayed dismisses the keyboard but not the menu

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https://hg.mozilla.org/integration/gaia-central/rev/86af9b019e31
Author: cctuan <georgeiscoming@gmail.com>
Desc: Bug 1095774 - [Text Selection] raise zindex of text-selection bubble

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https://hg.mozilla.org/integration/gaia-central/rev/f063700a6102
Author: Salvador de la Puente <salva@unoyunodiez.com>
Desc: Revert "Merge pull request #26240 from lodr/bug-997547-text-to-email-from-contacts"

This reverts commit 87e91a8c0ff44ff23c49d62c0d8f3827e0bccff9, reversing
changes made to 17b0cf9691ff70ee02b1254691351d6b63086c03.
Bumping manifests a=b2g-bump