Prepare sp-runtime for publication (#10451)

* Bump versions of sp-core and dependencies to v4.0.0

* Update references from `4.0.0-dev` –> `4.0.0`

* Funny whitespace

* Funny whitespace 2

* Prepare `sp-runtime` for publication

substrate/primitives/panic-handler/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "sp-panic-handler"
-version = "4.0.0-dev"
+version = "4.0.0"
 authors = ["Parity Technologies <admin@parity.io>"]
 edition = "2021"
 license = "Apache-2.0"