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

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https://hg.mozilla.org/integration/gaia-1_4/rev/03e68620e7a5
Author: steveck-chung <schung@mozilla.com>
Desc: Merge pull request #20396 from steveck-chung/bug-994553

Bug 994553 - [Sora][Message][Contacts]Contacts's head portrait do not display in Message. r=julienw
Conflicts:
	apps/sms/test/unit/thread_list_ui_test.js
Bumping manifests a=b2g-bump