Contracts Bump ApiVersion and add test (#3619)

ApiVersion should have been bumped with
https://github.com/paritytech/polkadot-sdk/pull/3606
this does that and add a test so we don't forget to do that everytime

substrate/frame/contracts/src/lib.rs

@@ -222,10 +222,19 @@ pub struct Environment<T: Config> {
 pub struct ApiVersion(u16);
 impl Default for ApiVersion {
 	fn default() -> Self {
-		Self(1)
+		Self(2)
 	}
 }
 
+#[test]
+fn api_version_is_up_to_date() {
+	assert_eq!(
+		109,
+		crate::wasm::STABLE_API_COUNT,
+		"Stable API count has changed. Bump the returned value of ApiVersion::default() and update the test."
+	);
+}
+
 #[frame_support::pallet]
 pub mod pallet {
 	use super::*;

substrate/frame/contracts/src/wasm/mod.rs

@@ -21,6 +21,9 @@
 mod prepare;
 mod runtime;
 
+#[cfg(test)]
+pub use runtime::STABLE_API_COUNT;
+
 #[cfg(doc)]
 pub use crate::wasm::runtime::api_doc;
 

substrate/frame/contracts/src/wasm/runtime.rs

@@ -987,7 +987,6 @@ impl<'a, E: Ext + 'a> Runtime<'a, E> {
 // for every function.
 #[define_env(doc)]
 pub mod env {
-
 	/// Set the value at the given key in the contract storage.
 	/// See [`pallet_contracts_uapi::HostFn::set_storage`]
 	#[prefixed_alias]