Add firestore to test dependencies

Author: ScottMansfield

pyproject.toml

@@ -123,6 +123,7 @@ test = [
   "a2a-sdk>=0.3.0,<0.4.0",
   "anthropic>=0.43.0",                            # For anthropic model tests
   "crewai[tools];python_version>='3.11' and python_version<'3.12'",         # For CrewaiTool tests; chromadb/pypika fail on 3.12+
+  "google-cloud-firestore>=2.11.0",
   "kubernetes>=29.0.0",                           # For GkeCodeExecutor
   "langchain-community>=0.3.17",
   "langgraph>=0.2.60, <0.4.8",                    # For LangGraphAgent