Bump clap from 3.1.18 to 3.2.2 (#1370)

* Bump clap from 3.1.18 to 3.2.2

Bumps [clap](https://github.com/clap-rs/clap) from 3.1.18 to 3.2.2.
- [Release notes](https://github.com/clap-rs/clap/releases)
- [Changelog](https://github.com/clap-rs/clap/blob/master/CHANGELOG.md)
- [Commits](https://github.com/clap-rs/clap/compare/v3.1.18...v3.2.2)

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

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

* Bump clap to 3.2.5 and fix warnings

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Sebastian Kunert <skunert49@gmail.com>

cumulus/client/cli/src/lib.rs

@@ -119,11 +119,11 @@ impl sc_cli::CliConfiguration for PurgeChainCmd {
 	}
 }
 
-fn validate_relay_chain_url(arg: &str) -> Result<(), String> {
+fn validate_relay_chain_url(arg: &str) -> Result<Url, String> {
 	let url = Url::parse(arg).map_err(|e| e.to_string())?;
 
 	if url.scheme() == "ws" {
-		Ok(())
+		Ok(url)
 	} else {
 		Err(format!(
 			"'{}' URL scheme not supported. Only websocket RPC is currently supported",
@@ -148,8 +148,7 @@ pub struct RunCmd {
 	/// EXPERIMENTAL: Specify an URL to a relay chain full node to communicate with.
 	#[clap(
 		long,
-		parse(try_from_str),
-		validator = validate_relay_chain_url,
+		value_parser = validate_relay_chain_url,
 		conflicts_with_all = &["alice", "bob", "charlie", "dave", "eve", "ferdie", "one", "two"]	)
 	]
 	pub relay_chain_rpc_url: Option<Url>,