Bump spl-token to v2 (#352)

program/Cargo.toml

@@ -3,7 +3,7 @@
 
 [package]
 name = "spl-token"
-version = "1.1.0"
+version = "2.0.0"
 description = "Solana Program Library Token"
 authors = ["Solana Maintainers <maintainers@solana.foundation>"]
 repository = "https://github.com/solana-labs/solana-program-library"