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

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https://hg.mozilla.org/integration/gaia-central/rev/a69353fc9b76
Author: James Burke <jrburke@gmail.com>
Desc: Merge pull request #26213 from jrburke/bug1092440-email-text-selection

Bug 1092440 - Email should follow text selection pattern r=asuth

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https://hg.mozilla.org/integration/gaia-central/rev/c0b69da03a3f
Author: jrburke <jrburke@gmail.com>
Desc: Bug 1092440 - Email should follow text selection pattern

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https://hg.mozilla.org/integration/gaia-central/rev/7e87f718f77b
Author: James Burke <jrburke@gmail.com>
Desc: Merge pull request #26162 from jrburke/bug1064617-email-rtl

Bug 1064617 - (email-rtl) [META] [RTL] Email r=asuth

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https://hg.mozilla.org/integration/gaia-central/rev/1bed4370deb1
Author: jrburke <jrburke@gmail.com>
Desc: Bug 1064617 - (email-rtl) [META] [RTL] Email
Bumping manifests a=b2g-bump