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

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https://hg.mozilla.org/integration/gaia-central/rev/2077c1fca803
Author: Jan Jongboom <janjongboom@gmail.com>
Desc: Merge pull request #15309 from comoyo/bug959175

Bug 959175 - Force redraw on uppercase switch when layout has secondLayout flag. r=RudyL

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https://hg.mozilla.org/integration/gaia-central/rev/b6fe7ca98da2
Author: Jan Jongboom <janjongboom@gmail.com>
Desc: Bug 959175 - Force redraw on uppercase switch when layout has secondLayout flag
Bumping manifests a=b2g-bump