Bumping gaia.json for 4 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-2_0/rev/95e377f3fc60
Author: Jim Porter <jporter@mozilla.com>
Desc: Bug 1057080 - Hover/press state for ringtones doesn't show up anymore

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https://hg.mozilla.org/integration/gaia-2_0/rev/35238cef114c
Author: TheoChevalier <theo.chevalier11@gmail.com>
Desc: Bug 1056975 -  Backout Browser specific CSS rules for French from 2.0 to fix tabs in Browser

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https://hg.mozilla.org/integration/gaia-2_0/rev/d9ac33a43bf2
Author: Ryan VanderMeulen <rvandermeulen@mozilla.com>
Desc: Merge pull request #23186 from sfoster/appterminated-cardsview-bug-1056448-2pt0

Bug 1056448 - removed card for killed app. r=alive

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https://hg.mozilla.org/integration/gaia-2_0/rev/2c3c1424b9c3
Author: Sam Foster <sfoster@mozilla.com>
Desc: Bug 1056448 - removed card for killed app. r=alive
Bumping manifests a=b2g-bump