build(deps): bump tokio from 1.14.0 to 1.15.0

Bumps [tokio](https://github.com/tokio-rs/tokio) from 1.14.0 to 1.15.0.
- [Release notes](https://github.com/tokio-rs/tokio/releases)
- [Commits](tokio-rs/tokio@tokio-1.14.0...tokio-1.15.0)

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

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

Author: dependabot[bot]

Cargo.lock

@@ -42,7 +42,7 @@ slog-envlogger = "2.1.0"
 slog-term = "2.7.0"
 petgraph = "0.6.0"
 tiny-keccak = "1.5.0"
-tokio = { version = "1.14.0", features = ["time", "sync", "macros", "test-util", "rt-multi-thread", "parking_lot"] }
+tokio = { version = "1.15.0", features = ["time", "sync", "macros", "test-util", "rt-multi-thread", "parking_lot"] }
 tokio-stream = { version = "0.1.8", features = ["sync"] }
 tokio-retry = "0.3.0"
 url = "2.2.1"

graph/Cargo.toml

@@ -5,7 +5,7 @@ edition = "2018"
 
 [dev-dependencies]
 bollard = "0.10"
-tokio = {version = "1.14.0", features = ["rt", "macros", "process"]}
+tokio = {version = "1.15.0", features = ["rt", "macros", "process"]}
 tokio-stream = "0.1"
 futures = "0.3.13"
 port_check = "0.1.5"