Update dependencies (#720)

log:
```
    Updating crates.io index
    Updating alphanumeric-sort v1.4.0 -> v1.4.1
    Updating anyhow v1.0.38 -> v1.0.40
    Updating crossbeam-channel v0.5.0 -> v0.5.1
    Updating futures-channel v0.3.13 -> v0.3.14
    Updating futures-core v0.3.13 -> v0.3.14
    Updating futures-io v0.3.13 -> v0.3.14
    Updating futures-sink v0.3.13 -> v0.3.14
    Updating futures-task v0.3.13 -> v0.3.14
    Updating futures-util v0.3.13 -> v0.3.14
    Updating h2 v0.3.1 -> v0.3.2
    Updating http v0.2.3 -> v0.2.4
    Updating http-body v0.4.0 -> v0.4.1
    Updating httparse v1.3.5 -> v1.4.0
    Updating hyper v0.14.4 -> v0.14.5
    Updating idna v0.2.2 -> v0.2.3
    Updating js-sys v0.3.48 -> v0.3.50
    Updating libc v0.2.88 -> v0.2.93
    Updating memoffset v0.6.1 -> v0.6.3
    Updating mio v0.7.9 -> v0.7.11
    Updating miow v0.3.6 -> v0.3.7
    Updating openssl v0.10.32 -> v0.10.33
    Updating openssl-sys v0.9.60 -> v0.9.61
    Updating pin-project v1.0.5 -> v1.0.7
    Updating pin-project-internal v1.0.5 -> v1.0.7
    Updating proc-macro2 v1.0.24 -> v1.0.26
    Updating redox_syscall v0.2.5 -> v0.2.6
    Updating regex v1.4.3 -> v1.4.5
    Updating regex-syntax v0.6.22 -> v0.6.23
    Updating reqwest v0.11.1 -> v0.11.3
    Updating security-framework v2.1.1 -> v2.2.0
    Updating security-framework-sys v2.1.1 -> v2.2.0
    Updating serde v1.0.124 -> v1.0.125
    Updating serde_derive v1.0.124 -> v1.0.125
    Updating socket2 v0.3.19 -> v0.4.0
    Updating syn v1.0.62 -> v1.0.69
    Removing thread_local v1.1.3
    Updating tinyvec v1.1.1 -> v1.2.0
    Updating tokio v1.2.0 -> v1.5.0
    Updating tokio-util v0.6.3 -> v0.6.6
    Updating unicode-bidi v0.3.4 -> v0.3.5
    Updating vcpkg v0.2.11 -> v0.2.12
    Updating wasm-bindgen v0.2.71 -> v0.2.73
    Updating wasm-bindgen-backend v0.2.71 -> v0.2.73
    Updating wasm-bindgen-futures v0.4.21 -> v0.4.23
    Updating wasm-bindgen-macro v0.2.71 -> v0.2.73
    Updating wasm-bindgen-macro-support v0.2.71 -> v0.2.73
    Updating wasm-bindgen-shared v0.2.71 -> v0.2.73
    Updating web-sys v0.3.48 -> v0.3.50
```

Author: JohnTitor