build(deps): update futures requirement from 0.1.27 to 0.3.1

Updates the requirements on [futures](https://github.com/rust-lang-nursery/futures-rs) to permit the latest version.
- [Release notes](https://github.com/rust-lang-nursery/futures-rs/releases)
- [Changelog](https://github.com/rust-lang/futures-rs/blob/master/CHANGELOG.md)
- [Commits](https://github.com/rust-lang-nursery/futures-rs/compare/0.1.27...0.3.1)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>
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dependabot-preview[bot] 2019-12-02 04:29:08 +00:00 committed by GitHub
parent 94bb4829a2
commit ce1fd81465
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@ -5,7 +5,7 @@ authors = ["Nathan Sobo <nathan@github.com>", "Yinan Long <lynweklm@gmail.com>"]
license = "MIT"
[dependencies]
futures = "0.1.27"
futures = "0.3.1"
[build-dependencies]
bindgen = "0.52"