chore(deps): bump cedar-policy in /packages/cedar_ffi/src

Bumps [cedar-policy](https://github.com/cedar-policy/cedar) from 4.7.0 to 4.8.1.
- [Release notes](https://github.com/cedar-policy/cedar/releases)
- [Commits](cedar-policy/cedar@v4.7.0...v4.8.1)

---
updated-dependencies:
- dependency-name: cedar-policy
  dependency-version: 4.8.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

packages/cedar_ffi/src/Cargo.lock

@@ -8,7 +8,7 @@ crate-type = ["staticlib", "cdylib"]
 
 [dependencies]
 anyhow = { version = "1.0" }
-cedar-policy = { version = "4.7" }
+cedar-policy = { version = "4.8" }
 log = "0.4"
 once_cell = "1.21"
 serde = "1.0"