Increment subkey version to 2.0.2 (#11656)

* Increment subkey version to 2.0.2

* Update Cargo.lock

Co-authored-by: Davide Galassi <davxy@datawok.net>

substrate/Cargo.lock

@@ -10406,7 +10406,7 @@ dependencies = [
 
 [[package]]
 name = "subkey"
-version = "2.0.1"
+version = "2.0.2"
 dependencies = [
  "clap 3.1.18",
  "sc-cli",

substrate/bin/utils/subkey/Cargo.toml

 [package]
 name = "subkey"
-version = "2.0.1"
+version = "2.0.2"
 authors = ["Parity Technologies <admin@parity.io>"]
 edition = "2021"
 license = "GPL-3.0-or-later WITH Classpath-exception-2.0"