Update jemallocator requirement from 0.3 to 0.5

Updates the requirements on [jemallocator](https://github.com/tikv/jemallocator) to permit the latest version.
- [Release notes](https://github.com/tikv/jemallocator/releases)
- [Changelog](https://github.com/tikv/jemallocator/blob/main/CHANGELOG.md)
- [Commits](https://github.com/tikv/jemallocator/commits)

---
updated-dependencies:
- dependency-name: jemallocator
  dependency-type: direct:production
...

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

Author: dependabot[bot]

Cargo.toml

@@ -25,7 +25,7 @@ serde_json = { version = "1", optional = true }
 alloc_counter = { version = "0.0.4", optional = true }
 colored = { version = "2.0", optional = true }
 getopts = { version = "0.2", optional = true }
-jemallocator = { version = "0.3", optional = true }
+jemallocator = { version = "0.5", optional = true }
 perfcnt = { version = "0.8", optional = true }
 
 # benchmarking