Bumping gaia.json for 2 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/8d5547f90a5b
Author: Eitan Isaacson <eitan@monotonous.org>
Desc: Merge pull request #23731 from eeejay/bug-1062989

Bug 1062989 - Add header localizable strings for screen reader and color... r=flod

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https://hg.mozilla.org/integration/gaia-central/rev/e0f94cd32831
Author: Eitan Isaacson <eitan@monotonous.org>
Desc: Bug 1062989 - Add header localizable strings for screen reader and color filter sections.
Bumping manifests a=b2g-bump