Add Elasticsearch and Tenacity to project requirements

Update project dependencies to include:
- Elasticsearch for potential search and indexing functionality
- Tenacity for improved retry handling in various components

Author: strickvl

llm-complete-guide/steps/rag_deployment.py

@@ -37,6 +37,8 @@
 datasets
 torch
 huggingface-hub
+elasticsearch
+tenacity
 {chr(10).join(gcp_reqs)}
 """