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

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https://hg.mozilla.org/integration/gaia-1_3/rev/8fa336253d5c
Author: Ghislain 'Aus' Lacroix <aus@noiseport.org>
Desc: Merge pull request #16537 from nullaus/v1.3

* fix gjslint error.

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https://hg.mozilla.org/integration/gaia-1_3/rev/884fb4d2e903
Author: Ghislain 'Aus' Lacroix <aus@mozilla.com>
Desc: * fix gjslint error.
Bumping manifests a=b2g-bump