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

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https://hg.mozilla.org/integration/gaia-2_1/rev/de1d440ed3a5
Author: Michael Henretty <michael.henretty@gmail.com>
Desc: Merge pull request #26426 from mikehenrty/bug-1104314-force-hide-keyboard

Bug 1104314 - Force hide keyboard during long press search app test, r=k...

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https://hg.mozilla.org/integration/gaia-2_1/rev/d5d0fa9e0369
Author: Michael Henretty <michael.henretty@gmail.com>
Desc: Bug 1104314 - Force hide keyboard during long press search app test, r=kgrandon, a=test-only

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https://hg.mozilla.org/integration/gaia-2_1/rev/9b39d060d2ea
Author: Michael Henretty <michael.henretty@gmail.com>
Desc: Merge pull request #26432 from mikehenrty/bug-1097497-wait-for-utility-tray-open

Bug 1097497 - Make sure utility tray is open before flicking closed, r=k...

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https://hg.mozilla.org/integration/gaia-2_1/rev/4090b6199657
Author: Michael Henretty <michael.henretty@gmail.com>
Desc: Bug 1097497 - Make sure utility tray is open before flicking closed, r=kgrandon, a=test-only
Bumping manifests a=b2g-bump