update nemoguardrails to v0.19.0-rc2

Author: Pouyanpi

pyproject.toml

@@ -4,7 +4,7 @@ description = "NeMo Guardrails is an open-source toolkit for easily adding progr
 authors = ["NVIDIA <nemoguardrails@nvidia.com>"]
 license = "LICENSE.md"
 readme = "README.md"
-version = "0.19.0-rc1"
+version = "0.19.0-rc2"
 packages = [{ include = "nemoguardrails" }]