Bump strum from 0.21.0 to 0.22.0 (#4047)

Bumps [strum](https://github.com/Peternator7/strum) from 0.21.0 to 0.22.0.
- [Release notes](https://github.com/Peternator7/strum/releases)
- [Changelog](https://github.com/Peternator7/strum/blob/master/CHANGELOG.md)
- [Commits](https://github.com/Peternator7/strum/commits)

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

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

polkadot/Cargo.lock

@@ -6457,7 +6457,7 @@ dependencies = [
  "polkadot-primitives",
  "sc-authority-discovery",
  "sc-network",
- "strum 0.21.0",
+ "strum 0.22.0",
  "thiserror",
 ]
 
@@ -10254,8 +10254,14 @@ name = "strum"
 version = "0.21.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "aaf86bbcfd1fa9670b7a129f64fc0c9fcbbfe4f1bc4210e9e98fe71ffc12cde2"
+
+[[package]]
+name = "strum"
+version = "0.22.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f7ac893c7d471c8a21f31cfe213ec4f6d9afeed25537c772e08ef3f005f8729e"
 dependencies = [
- "strum_macros 0.21.1",
+ "strum_macros 0.22.0",
 ]
 
 [[package]]
@@ -10282,6 +10288,18 @@ dependencies = [
  "syn",
 ]
 
+[[package]]
+name = "strum_macros"
+version = "0.22.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "339f799d8b549e3744c7ac7feb216383e4005d94bdb22561b3ab8f3b808ae9fb"
+dependencies = [
+ "heck",
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "sub-tokens"
 version = "0.1.0"