Bump enumn from 0.1.4 to 0.1.5 (#5938)

Bumps [enumn](https://github.com/dtolnay/enumn) from 0.1.4 to 0.1.5.
- [Release notes](https://github.com/dtolnay/enumn/releases)
- [Commits](https://github.com/dtolnay/enumn/compare/0.1.4...0.1.5)

---
updated-dependencies:
- dependency-name: enumn
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

polkadot/Cargo.lock

@@ -1676,9 +1676,9 @@ dependencies = [
 
 [[package]]
 name = "enumn"
-version = "0.1.4"
+version = "0.1.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "052bc8773a98bd051ff37db74a8a25f00e6bfa2cbd03373390c72e9f7afbf344"
+checksum = "038b1afa59052df211f9efd58f8b1d84c242935ede1c3dbaed26b018a9e06ae2"
 dependencies = [
  "proc-macro2",
  "quote",

polkadot/runtime/common/slot_range_helper/Cargo.toml

@@ -6,7 +6,7 @@ edition = "2021"
 
 [dependencies]
 paste = "1.0"
-enumn = "0.1.4"
+enumn = "0.1.5"
 parity-scale-codec = { version = "3.1.5", default-features = false, features = ["derive"] }
 sp-std = { package = "sp-std", git = "https://github.com/paritytech/substrate", branch = "master", default-features = false }
 sp-runtime = { git = "https://github.com/paritytech/substrate", branch = "master", default-features = false }