`tree-sitter-perl-next` is unmaintained

The author of `tree-sitter-perl-next` has stated that the crate is unmaintained and will not receive further fixes (see the repo's readme).

## Alternative(s)

- [`ts-parser-perl `](https://crates.io/crates/ts-parser-perl), an actively maintained tree-sitter Perl grammar that tree-sitter-perl-next initially forked.