fix: achieve parity between rag package and current impl (#3418)

- Sanitize ChromaDB collection names and use original dir naming
- Add persistent client with file locking to the ChromaDB factory
- Add upsert support to the ChromaDB client
- Suppress ChromaDB deprecation warnings for `model_fields`
- Extract `suppress_logging` into shared `logger_utils`
- Update tests to reflect upsert behavior
- Docs: add additional note

src/crewai/rag/chromadb/config.py

@@ -23,6 +23,12 @@ warnings.filterwarnings(
     module="pydantic._internal._generate_schema",
 )
 
+warnings.filterwarnings(
+    "ignore",
+    message=r".*'model_fields'.*is deprecated.*",
+    module=r"^chromadb(\.|$)",
+)
+
 
 def _default_settings() -> Settings:
     """Create default ChromaDB settings.