Bump rlimit from 0.5.2 to 0.5.4

Bumps [rlimit](https://github.com/Nugine/rlimit) from 0.5.2 to 0.5.4.
- [Release notes](https://github.com/Nugine/rlimit/releases)
- [Commits](Nugine/rlimit@v0.5.2...v0.5.4)

Signed-off-by: dependabot-preview[bot] <[email protected]>

Author: dependabot-preview[bot]

Cargo.lock

@@ -21,7 +21,7 @@ colored = "2.0.0"
 structopt = "0.3.20"
 async-std = "1.7.0"
 futures = "0.3"
-rlimit = "0.5.2"
+rlimit = "0.5.4"
 shell-words = "1.0.0"
 log = "0.4.0"
 env_logger = "0.8.2"