Add scala to upstream_parsers.md
@@ -22,6 +22,7 @@ Difftastic uses the following tree-sitter parsers:
| Python | [tree-sitter/tree-sitter-python](https://github.com/tree-sitter/tree-sitter-python) |
| Ruby | [tree-sitter/tree-sitter-ruby](https://github.com/tree-sitter/tree-sitter-ruby) |
| Rust | [tree-sitter/tree-sitter-rust](https://github.com/tree-sitter/tree-sitter-rust) ([forked](https://github.com/Wilfred/tree-sitter-rust)) |
+| Scala | [tree-sitter/tree-sitter-scala](https://github.com/tree-sitter/tree-sitter-scala) |
| TypeScript, TSX | [tree-sitter/tree-sitter-typescript](https://github.com/tree-sitter/tree-sitter-typescript) |
