add release notes

Author: stevenwinship

doc/release-notes/11413-rate-limiting-statistics-api.md

@@ -0,0 +1,8 @@
+### Rate Limiting Statistics API
+
+CSV dump of Rate Limiting Cache
+
+curl http://localhost:8080/api/admin/rateLimitStats
+curl http://localhost:8080/api/admin/rateLimitStats?deltaMinutesFilter=10
+
+See also [the guides](https://dataverse-guide--11359.org.readthedocs.build/en/11359/admin/rate_limiting.html), #11413, and #11359.