Fix the invalid license name for cargo-deny (#110)

Author: h7kanna

vendored/Cargo.toml

@@ -2,7 +2,7 @@
 name = "rustpython-parser-vendored"
 description = "RustPython parser vendored third-party crates."
 authors = ["RustPython Team", "and the original authors of the vendored modules"]
-license = "Various"
+license = "MIT"
 edition = { workspace = true }
 version = { workspace = true }
 repository = { workspace = true }