build(deps): bump policy-evaluator from v0.18.3 to v0.18.4

Bumps [policy-evaluator](https://github.com/kubewarden/policy-evaluator) from v0.18.3 to v0.18.4.
- [Commits](kubewarden/policy-evaluator@d4fee6b...4fcf2c4)

---
updated-dependencies:
- dependency-name: policy-evaluator
  dependency-type: direct:production
...

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

Author: dependabot[bot]

Cargo.lock

@@ -29,7 +29,7 @@ opentelemetry = { version = "0.24.0", default-features = false, features = [
 ] }
 opentelemetry_sdk = { version = "0.24.1", features = ["rt-tokio"] }
 pprof = { version = "0.13", features = ["prost-codec"] }
-policy-evaluator = { git = "https://github.com/kubewarden/policy-evaluator", tag = "v0.18.3" }
+policy-evaluator = { git = "https://github.com/kubewarden/policy-evaluator", tag = "v0.18.4" }
 rustls-pki-types = { version = "1", features = ["alloc"] }
 rayon = "1.10"
 regex = "1.10"