Add Elasticsearch as a subprocessors entry (#58737)

Author: danibrooks

content/site-policy/privacy-policies/github-subprocessors.md

@@ -31,6 +31,7 @@ If you have questions about this list, please contact us at <privacy@github.com>
 | Anthropic PBC                 | AI Inference and AI Services                                                   | United States                                     | United States      |
 | Cloudflare                    | Content delivery service                                                       | United States                                     | United States      |
 | CoreWeave, Inc.               | Cloud Hosted Infrastructure                                                    | United States                                     | United States      |
+| Elasticsearch, Inc.           | Cloud Hosted Infrastructure                                                    | United States                                     | United States      |
 | Fastly                        | Content delivery service                                                       | United States                                     | United States      |
 | Fireworks AI                  | AI Inference and AI Services                                                   | United States, Iceland, Germany                   | United States      |
 | FullStory, Inc.               | Customer support ticketing analysis                                            | United States                                     | United States      |