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

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https://hg.mozilla.org/integration/gaia-central/rev/80ec483ebdf6
Author: Francisco Jordano <arcturus@ardeenelinfierno.com>
Desc: Merge pull request #20301 from arcturus/bug-1020471

Bug 1020471 - WebrtcClient is not defined r=jmcf

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https://hg.mozilla.org/integration/gaia-central/rev/4d2e7508fb3b
Author: Francisco Jordano <fjordano@mozilla.com>
Desc: Bug 1020471 - WebrtcClient is not defined

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https://hg.mozilla.org/integration/gaia-central/rev/4c22359dee83
Author: Rudy Lu <me@rudy.lu>
Desc: Merge pull request #19968 from r-gaia-cs/bug-1019993

Bug 1019993 - Correct compositekey to compositeKey.
r=rudylu

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https://hg.mozilla.org/integration/gaia-central/rev/bc4a124a8686
Author: Raniere Silva <raniere@ime.unicamp.br>
Desc: Bug 1019993 - Correct compositekey to compositeKey

Replace compositekey with compositeKey to follow interCaps coding
style guidelines.
Bumping manifests a=b2g-bump