Bump mimalloc from 0.1.48 to 0.1.49

Bumps [mimalloc](https://github.com/purpleprotocol/mimalloc_rust) from 0.1.48 to 0.1.49.
- [Release notes](https://github.com/purpleprotocol/mimalloc_rust/releases)
- [Commits](purpleprotocol/mimalloc_rust@v0.1.48...v0.1.49)

---
updated-dependencies:
- dependency-name: mimalloc
  dependency-version: 0.1.49
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

Cargo.lock

@@ -36,7 +36,7 @@ http-body-util = "0.1.3"
 ipext = "0.1.0"
 libsodium-sys-stable = "1.24.0"
 log = { version = "0.4.29", features = ["std", "release_max_level_debug"] }
-mimalloc = { version = "0.1.48", default-features = false }
+mimalloc = { version = "0.1.49", default-features = false }
 parking_lot = "0.12.5"
 rand = "0.10.1"
 rlimit = "0.11.0"