drop version number so we can run dependabot before releasing

Author: CalebCourier

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "guardrails-ai"
-version = "0.6.7"
+version = "0.6.6"
 description = "Adding guardrails to large language models."
 authors = [
     {name = "Guardrails AI", email = "[email protected]"}