Bump crossbeam-channel from 0.4.2 to 0.4.4 in /exonum-java-binding/core/rust#1747

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dependabot/cargo/exonum-java-binding/core/rust/crossbeam-channel-0.4.4exonum/exonum-java-binding:dependabot/cargo/exonum-java-binding/core/rust/crossbeam-channel-0.4.4Copy head branch name to clipboard