bumped version in pyproject file

Author: AlejandroEsquivel

resources/py/pyproject.toml.template

@@ -1,6 +1,6 @@
 [project]
 name = "guardrails-api-client"
-version = "0.3.12"
+version = "0.3.13"
 description = "Guardrails API Client."
 authors = [
     {name = "Guardrails AI", email = "[email protected]"}