Bump bounded-vec from 0.6.0 to 0.7.1 (#6101)

Bumps [bounded-vec](https://github.com/ergoplatform/bounded-vec) from 0.6.0 to 0.7.1.
- [Release notes](https://github.com/ergoplatform/bounded-vec/releases)
- [Changelog](https://github.com/ergoplatform/bounded-vec/blob/develop/CHANGELOG.md)
- [Commits](https://github.com/ergoplatform/bounded-vec/compare/v0.6.0...v0.7.1)

---
updated-dependencies:
- dependency-name: bounded-vec
  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

@@ -674,9 +674,9 @@ dependencies = [
 
 [[package]]
 name = "bounded-vec"
-version = "0.6.0"
+version = "0.7.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3372be4090bf9d4da36bd8ba7ce6ca1669503d0cf6e667236c6df7f053153eb6"
+checksum = "68534a48cbf63a4b1323c433cf21238c9ec23711e0df13b08c33e5c2082663ce"
 dependencies = [
  "thiserror",
 ]