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

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https://hg.mozilla.org/integration/gaia-1_4/rev/6200de6b9fdb
Author: Marshall Culpepper <marshall.law@gmail.com>
Desc: Merge pull request #20104 from marshall/bug995434_ftuPingSimLocked_v1.4

Bug 999053: [FTU Ping] Handle multisim situations more gracefully when collecting network info

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https://hg.mozilla.org/integration/gaia-1_4/rev/84b86f818cc3
Author: Marshall Culpepper <marshall@mozilla.com>
Desc: Bug 999053: [FTU Ping] Handle multisim situations more gracefully when collecting network info. r=fabrice

Conflicts:

	apps/system/test/unit/ftu_ping_test.js
Bumping manifests a=b2g-bump