bump wolfssl version to 3.13.0

Author: moisesguimaraes

src/wolfssl/__about__.py

@@ -26,7 +26,7 @@
 
 # When bumping the C library version, reset the POST count to 0
 
-__wolfssl_version__ = "v3.12.2-stable"
+__wolfssl_version__ = "v3.13.0-stable"
 
 # We're using implicit post releases [PEP 440] to bump package version
 # while maintaining the C library version intact for better reference.