Update README

Author: cyab05

applications/rubin-rag/README.md

@@ -42,3 +42,6 @@ RAG helpers for documentation searches
 | weaviate.resources.requests.memory | string | `"150Mi"` |  |
 | weaviate.securityContext.allowPrivilegeEscalation | bool | `false` |  |
 | weaviate.securityContext.privileged | bool | `false` |  |
+| weaviate.securityContext.runAsGroup | int | `1000` |  |
+| weaviate.securityContext.runAsNonRoot | bool | `true` |  |
+| weaviate.securityContext.runAsUser | int | `1000` |  |