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

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https://hg.mozilla.org/integration/gaia-1_4/rev/680455d4b148
Author: Ghislain 'Aus' Lacroix <aus@noiseport.org>
Desc: Merge pull request #19569 from nullaus/v1.4

Merge pull request #19454 from nullaus/bug1007965

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https://hg.mozilla.org/integration/gaia-1_4/rev/89340323f121
Author: Ghislain 'Aus' Lacroix <aus@noiseport.org>
Desc: Merge pull request #19454 from nullaus/bug1007965

bug 1007965(cherry picked from commit 69790f4d8f787b8f4dbda4a9eb2c03bff254b3eb)
Bumping manifests a=b2g-bump