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

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https://hg.mozilla.org/integration/gaia-2_0/rev/9558fde90408
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Merge pull request #21653 from KevinGrandon/bug_1034657_vertical_statusbar_test

Bug 1034657 - [VerticalHome] Add edit mode confirm dialog statusbar integration test
(cherry picked from commit c8392728c3bf610b9d746ddf922fb06893bff8c0)

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https://hg.mozilla.org/integration/gaia-2_0/rev/4ce0e69d0b5a
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Merge pull request #21504 from KevinGrandon/bug_1036053_vertical_app_uninstall_pending_test

Bug 1036053 - Intermittent failing test, TEST-UNEXPECTED-FAIL | /builds/slave/test/gaia/apps/verticalhome/test/marionette/app_uninstall_pending_test.js
(cherry picked from commit 88dcf828237db7b699cbbcfa3e322596f7a7a626)
Bumping manifests a=b2g-bump