Bump tokio from 1.1.0 to 1.5.0

Bumps [tokio](https://github.com/tokio-rs/tokio) from 1.1.0 to 1.5.0.
- [Release notes](https://github.com/tokio-rs/tokio/releases)
- [Commits](https://github.com/tokio-rs/tokio/compare/tokio-1.1.0...tokio-1.5.0)

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

Cargo.lock

@@ -751,9 +751,9 @@ dependencies = [
 
 [[package]]
 name = "tokio"
-version = "1.1.0"
+version = "1.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8efab2086f17abcddb8f756117665c958feee6b2e39974c2f1600592ab3a4195"
+checksum = "83f0c8e7c0addab50b663055baf787d0af7f413a46e6e7fb9559a4e4db7137a5"
 dependencies = [
  "autocfg",
  "bytes",
@@ -770,9 +770,9 @@ dependencies = [
 
 [[package]]
 name = "tokio-macros"
-version = "1.0.0"
+version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "42517d2975ca3114b22a16192634e8241dc5cc1f130be194645970cc1c371494"
+checksum = "caf7b11a536f46a809a8a9f0bb4237020f70ecbf115b842360afb127ea2fda57"
 dependencies = [
  "proc-macro2",
  "quote",

Cargo.toml

@@ -12,7 +12,7 @@ lto = "fat"
 serde = {version = "1.0", features = ["derive"]}
 bincode = "1.3"
 warp = {version = "0.3", default-features = false}
-tokio = {version = "1.1", features = ["macros", "io-util", "net", "time", "rt-multi-thread", "fs", "sync", "signal"]}
+tokio = {version = "1.5", features = ["macros", "io-util", "net", "time", "rt-multi-thread", "fs", "sync", "signal"]}
 binascii = "0.1"
 toml = "0.5"
 clap = "2.33"