chore: Update PyO3 to 0.13

Author: Stranger6667

bindings/python/CHANGELOG.md

@@ -2,6 +2,8 @@
 
 ## [Unreleased]
 
+- Upgrade `Pyo3` to `0.13`.
+
 ## [0.6.2] - 2021-01-28
 
 ### Fixed

bindings/python/Cargo.toml

@@ -21,7 +21,7 @@ default-features = false
 [dependencies]
 url = "2"
 rayon = "1"
-pyo3 = { version = "^0.12", features = ["extension-module"] }
+pyo3 = { version = "^0.13", features = ["extension-module"] }
 pyo3-built = "0.4"
 
 [profile.release]