Bump tokio from 1.7.0 to 1.8.1

Bumps [tokio](https://github.com/tokio-rs/tokio) from 1.7.0 to 1.8.1.
- [Release notes](https://github.com/tokio-rs/tokio/releases)
- [Commits](https://github.com/tokio-rs/tokio/compare/tokio-1.7.0...tokio-1.8.1)

---
updated-dependencies:
- dependency-name: tokio
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/Cargo.toml b/Cargo.toml
index 3c33743..53e7db2 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -9,7 +9,7 @@ edition = "2018"
 [dependencies]
 futures = "0.3"
 structopt = "0.3"
-tokio = { version = "1.7", features = ["full"] }
+tokio = { version = "1.8", features = ["full"] }
 async-channel = { version = "1.6" }
 num_cpus = "1"
 regex = "1"