Update dlopen2 requirement from 0.4 to 0.6

Updates the requirements on [dlopen2](https://github.com/OpenByteDev/dlopen2) to permit the latest version.
- [Commits](https://github.com/OpenByteDev/dlopen2/commits)

---
updated-dependencies:
- dependency-name: dlopen2
  dependency-type: direct:production
...

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

crates/nsi-core/Cargo.toml

@@ -32,7 +32,7 @@ ustr_handles = []
 reqwest = { version = "0.11", features = ["blocking"], optional = true }
 
 [dependencies]
-dlopen2 = { version = "0.4", optional = true }
+dlopen2 = { version = "0.6", optional = true }
 enum_dispatch = "0.3"
 lazy_static = "1.4"
 log = "0.4.17"