Bumping gaia.json for 5 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/22d551f2503a
Author: Carmen Jiménez <cjc@tid.es>
Desc: Merge pull request #21177 from frsela/STK/Bug1028789

Bug 1028789 - [Sora]There is no character counter inside STK submenus  (r = vingtetun)

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https://hg.mozilla.org/integration/gaia-central/rev/7ca0e3d355d1
Author: Fernando Rodriguez Sela <frsela@tid.es>
Desc: Bug 1028789 - [Sora]There is no character counter inside STK submenus

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https://hg.mozilla.org/integration/gaia-central/rev/35b99b1d46b8
Author: Chris Lord <chrislord.net@gmail.com>
Desc: Merge pull request #21120 from Cwiiis/bug984792

Bug 984792 - Account for direction when swiping in task manager. r=alive

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https://hg.mozilla.org/integration/gaia-central/rev/389fed9b6230
Author: Chris Lord <chrislord.net@gmail.com>
Desc: Bug 984792 - Account for direction when swiping in task manager. r=alive

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https://hg.mozilla.org/integration/gaia-central/rev/3171e9631271
Author: Chris Lord <chrislord.net@gmail.com>
Desc: Bug 984792 - Add a test to check that changing swipe direction in task manager works. r=alive
Bumping manifests a=b2g-bump