Bumping gaia.json for 3 gaia-1_3 revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-1_3/rev/54c1066df631
Author: Alive Kuo <alegnadise@gmail.com>
Desc: Bug 948226 - Activity orientation lock order

Conflicts:
	apps/system/test/unit/activity_window_test.js

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https://hg.mozilla.org/integration/gaia-1_3/rev/4205e58116a3
Author: GaryChen(pychen) <mmm198219@gmail.com>
Desc: Merge pull request #15285 from mpizza/Bug_937487_v1.3

Merge pull request #14831 from mpizza/Bug_937487_handle_activity

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https://hg.mozilla.org/integration/gaia-1_3/rev/aacf2a3a1fbd
Author: GaryChen(pychen) <mmm198219@gmail.com>
Desc: Merge pull request #14831 from mpizza/Bug_937487_handle_activity

Bug 937487 - Keyboard won't disappear after focusing an input and then l... r=alive.
(cherry picked from commit e8dfed06a8524c0d72c0c96c83341562754164fc)