Update PyO3 to 0.18

Author: smheidrich

Cargo.lock

@@ -11,7 +11,7 @@ crate-type = ["cdylib"]
 [dependencies]
 num-bigint = ">=0.4.3,<0.5"
 owned_chars = ">=0.3.2,<0.4"
-pyo3 = { version = ">=0.17,<0.18", features = ["num-bigint"] }
+pyo3 = { version = ">=0.18,<0.19", features = ["num-bigint"] }
 thiserror = ">=1.0.37,<2"
 utf8-chars = ">=2.0.2,<3"
 compact_str = ">=0.7.1,<0.8"
@@ -24,7 +24,7 @@ utf8-width = ">=0.1.6,<0.2"
 rstest = ">=0.18.1,<0.19"
 
 [build-dependencies]
-pyo3-build-config = { version = "= 0.17.3", features = ["resolve-config"] }
+pyo3-build-config = { version = "= 0.18.3", features = ["resolve-config"] }
 
 # workaround for linkage errors when running cargo test:
 # https://pyo3.rs/v0.18.1/faq#i-cant-run-cargo-test-or-i-cant-build-in-a-cargo-workspace-im-having-linker-issues-like-symbol-not-found-or-undefined-reference-to-_pyexc_systemerror

Cargo.toml

@@ -157,7 +157,7 @@ enum Token {
 #[pymethods]
 impl RustTokenizer {
     #[new]
-    #[args("*", buffering = -1, correct_cursor = "true")]
+    #[pyo3(signature = (stream, *, buffering = -1, correct_cursor = true))]
     fn new(stream: PyObject, buffering: i64, correct_cursor: bool) -> PyResult<Self> {
         let buffering_mode = if buffering < 0 {
             BufferingMode::DontCare