Update Cargo.toml

[nokome]

Thanks for tree-sitter-bash 👏🏽 .

This PR, expand the semver range for tree-sitter in Cargo.toml. Using this exampled range avoids the Rust compiler error,

expected struct `tree_sitter::Language`, found a different struct `tree_sitter::Language`
perhaps two different versions of crate `tree_sitter` are being used?

which is encountered when using this crate along side tree-sitter-python, tree-sitter-javascript and tree-sitter-typescript. The range is consistent with the range used in those crates e.g. https://github.com/tree-sitter/tree-sitter-python/blob/master/Cargo.toml).

[nokome]

Hi. Would appreciate it if this PR could be reviewed and hopefully merged.