Bump solang-parser version for crate publish (#1209)

Note we don't want to include the entire solc source tree in the crate,
so exclude all the testdata.

Signed-off-by: Sean Young <sean@mess.org>

solang-parser/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "solang-parser"
-version = "0.2.2"
+version = "0.2.3"
 authors = ["Sean Young <sean@mess.org>", "Lucas Steuernagel <lucas.tnagel@gmail.com>", "Cyrill Leutwiler <bigcyrill@hotmail.com>"]
 homepage = "https://github.com/hyperledger/solang"
 documentation = "https://solang.readthedocs.io/"
@@ -9,6 +9,7 @@ build = "build.rs"
 description = "Solang Solidity Parser"
 keywords = [ "solidity", "parser" ]
 edition = "2021"
+exclude = [ "/testdata" ]
 
 [build-dependencies]
 lalrpop = "0.19"