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

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https://hg.mozilla.org/integration/gaia-central/rev/801e7ccb6550
Author: Zac <zcampbell@mozilla.com>
Desc: Merge pull request #18228 from AndreiH/bug_995019

Bug 995019 - Intermittent failing test, test_homescreen_delete_app.py te...

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https://hg.mozilla.org/integration/gaia-central/rev/847045ee17a3
Author: Andrei Hutusoru <andreihutusoru@P5069.(none)>
Desc: Bug 995019 - Intermittent failing test, test_homescreen_delete_app.py test_homescreen_delete_app.TestDeleteApp.test_delete_app

Another wait

up

update script

update

update
Bumping manifests a=b2g-bump