Update the `wat` crate to latest version and use `Error::set_path` in `Module::from_file` to properly record the path associated with errors.
This is the test-programs crate, which builds and runs whole programs
compiled to wasm32-wasi.
To actually run these tests, the test-programs feature must be enabled, e.g.:
cargo test --features test-programs/test_programs --package test-programs