Bump version to 0.4.31

Author: smheidrich

setup.py

@@ -7,7 +7,7 @@
 
 setup(
     name="json-stream-rs-tokenizer",
-    version="0.4.30",
+    version="0.4.31",
     rust_extensions=[
         RustExtension(
             "json_stream_rs_tokenizer.json_stream_rs_tokenizer",