Bumping gaia.json for 2 gaia-1_3 revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-1_3/rev/6f4004812132
Author: Michael Henretty <michael.henretty@gmail.com>
Desc: Merge pull request #16234 from mikehenrty/bug-966571-uplift

Merge pull request #15977 from mikehenrty/bug-966571-retrycount

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https://hg.mozilla.org/integration/gaia-1_3/rev/621ec2054c3e
Author: Michael Henretty <michael.henretty@gmail.com>
Desc: Merge pull request #15977 from mikehenrty/bug-966571-retrycount

Bug 966571 - Retry count not shown up in System SIM Dialog, r=arcturus,alive,ferjm
(cherry picked from commit 9de7295648e4bbbacfb90e897f50fbae0de4ee43)

Conflicts:
	build/jshint/xfail.list