Bump magnus from 0.8.0 to 0.8.1 in the cargo group

Bumps the cargo group with 1 update: [magnus](https://github.com/matsadler/magnus).


Updates `magnus` from 0.8.0 to 0.8.1
- [Release notes](https://github.com/matsadler/magnus/releases)
- [Changelog](https://github.com/matsadler/magnus/blob/main/CHANGELOG.md)
- [Commits](matsadler/magnus@0.8.0...0.8.1)

---
updated-dependencies:
- dependency-name: magnus
  dependency-version: 0.8.1
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: cargo
...

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

Author: dependabot[bot]

Cargo.lock

@@ -10,6 +10,6 @@ publish = false
 crate-type = ["cdylib"]
 
 [dependencies]
-magnus = { version = "0.8.0" }
+magnus = { version = "0.8.1" }
 rb-sys = { version = "0.9.117", features = ["stable-api-compiled-fallback"] }
 tiktoken-rs = { version = "0.7.0" }