chore(deps): bump casbin from 2.4.0 to 2.5.0

Bumps [casbin](https://github.com/casbin/casbin-rs) from 2.4.0 to 2.5.0.
- [Release notes](https://github.com/casbin/casbin-rs/releases)
- [Changelog](https://github.com/casbin/casbin-rs/blob/master/CHANGELOG.md)
- [Commits](https://github.com/casbin/casbin-rs/compare/v2.4.0...v2.5.0)

---
updated-dependencies:
- dependency-name: casbin
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Cargo.lock

@@ -1966,9 +1966,9 @@ dependencies = [
 
 [[package]]
 name = "casbin"
-version = "2.4.0"
+version = "2.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d51a6ae36c4b6d1241cfd6572ec861639095291f1fba7222443b63e44b25be5e"
+checksum = "66e141a8db13c2e8bf3fdd6ac2b48ace7e70d2e4a66c329a4bb759e1368f22dc"
 dependencies = [
  "async-trait",
  "fixedbitset",
@@ -1980,6 +1980,7 @@ dependencies = [
  "regex",
  "rhai",
  "serde",
+ "serde_json",
  "thiserror",
  "tokio",
 ]