Bump parity-scale-codec from 3.6.3 to 3.6.4 (#2909)

Bumps [parity-scale-codec](https://github.com/paritytech/parity-scale-codec) from 3.6.3 to 3.6.4.
- [Release notes](https://github.com/paritytech/parity-scale-codec/releases)
- [Changelog](https://github.com/paritytech/parity-scale-codec/blob/master/CHANGELOG.md)
- [Commits](https://github.com/paritytech/parity-scale-codec/compare/v3.6.3...parity-scale-codec-v3.6.4)

---
updated-dependencies:
- dependency-name: parity-scale-codec
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

cumulus/Cargo.lock

@@ -8893,9 +8893,9 @@ dependencies = [
 
 [[package]]
 name = "parity-scale-codec"
-version = "3.6.3"
+version = "3.6.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "756d439303e94fae44f288ba881ad29670c65b0c4b0e05674ca81061bb65f2c5"
+checksum = "dd8e946cc0cc711189c0b0249fb8b599cbeeab9784d83c415719368bb8d4ac64"
 dependencies = [
  "arrayvec 0.7.2",
  "bitvec",
@@ -8908,9 +8908,9 @@ dependencies = [
 
 [[package]]
 name = "parity-scale-codec-derive"
-version = "3.6.3"
+version = "3.6.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9d884d78fcf214d70b1e239fcd1c6e5e95aa3be1881918da2e488cc946c7a476"
+checksum = "2a296c3079b5fefbc499e1de58dc26c09b1b9a5952d26694ee89f04a43ebbb3e"
 dependencies = [
  "proc-macro-crate",
  "proc-macro2",