Cabal revisions of amazonka-cognito-sync-0.3.4

Hackage metadata revisions edit the .cabal file after upload; each diff below is one revision.

 name:                  amazonka-cognito-sync version:               0.3.4+x-revision: 1 synopsis:              Amazon Cognito Sync SDK. homepage:              https://github.com/brendanhay/amazonka license:               OtherLicense      build-depends:           amazonka-core == 0.3.4.*-        , base          >= 4.7     && < 5+        , base          >= 4.7     && < 4.19