Bump crate versions in Rust README
@@ -8,8 +8,8 @@ way.)
``` toml
[dependencies]
-tree-sitter = "0.19"
-tree-sitter-javascript = "0.19"
+tree-sitter = "0.20"
+tree-sitter-javascript = "0.20"
```
Typically, you will use the [language][language func] function to add this
