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/d13a3565e0ea
Author: Florin Strugariu <bebef_1987@yahoo.com>
Desc: Merge pull request #15115 from viorelaioia/bug_957645

Bug 957645 - [v1.3] Update runningApps method in GaiaTest

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https://hg.mozilla.org/integration/gaia-1_3/rev/6d220e534e58
Author: Dave Hunt <dave.hunt@gmail.com>
Desc: Bug 928968 - Add a command to the gaia command line tool to print the applications installed. r=zcampbell r=rwood