Merge branch 'add-anthropic-version-header' into 'master'

Add anthropic version header to experimentation api

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/152461



Merged-by: Alejandro Rodríguez <alejandro@gitlab.com>
Approved-by: Ian Baum <ibaum@gitlab.com>
Approved-by: Alejandro Rodríguez <alejandro@gitlab.com>
Reviewed-by: Ian Baum <ibaum@gitlab.com>
Reviewed-by: Hunter Stewart <hustewart@gitlab.com>
Co-authored-by: Michael Thomas <micthomas@gitlab.com>

ee/lib/api/ai/experimentation/anthropic.rb

@@ -26,6 +26,7 @@ def anthropic_post(endpoint, json_body: nil)
             headers = {
               "Accept" => ["application/json"],
               "Content-Type" => ["application/json"],
+              "anthropic-version" => "2023-06-01",
               "X-Api-Key" => [anthropic_api_key]
             }
 

ee/spec/requests/api/ai/experimentation/anthropic_spec.rb

@@ -16,6 +16,7 @@
       {
         'Accept' => ['application/json'],
         'Content-Type' => ['application/json'],
+        'anthropic-version' => ['2023-06-01'],
         'X-Api-Key' => [anthropic_api_key]
       }
     end