Update CHANGELOG

CHANGELOG.org

@@ -3,14 +3,20 @@
 Newest items at the top. Note that updates before 2022-August were copied from
 [[https://groups.google.com/g/clojars-maintainers][announcements on the Clojars Maintainer's mailing list]] with little editing.
 
+* 2023-May
+*** [[https://github.com/clojars/clojars-web/commits/200][200]]
++ [[https://github.com/clojars/clojars-web/issues/864][Properly verify io groups for VCS self-service verification]] ([[https://github.com/tobias][Toby Crawley]])
+
 ** 2023-April
 *** [[https://github.com/clojars/clojars-web/commits/197][197]]
 + [[https://github.com/clojars/clojars-web/issues/859][Stop requiring checksums for signature files]] ([[https://github.com/tobias][Toby Crawley]])
 *** [[https://github.com/clojars/clojars-web/commits/199][199]]
 + [[https://github.com/clojars/clojars-web/issues/861][Sort versions before indexing]] ([[https://github.com/tobias][Toby Crawley]])
+
 ** 2023-March
 *** [[https://github.com/clojars/clojars-web/commits/196][196]]
 + Update DMCA contact information ([[https://github.com/danielcompton][Daniel Compton]])
+
 ** 2023-February
 *** [[https://github.com/clojars/clojars-web/commits/194][194]]
 + Improve verification error messages to reduce confusion ([[https://github.com/tobias][Toby Crawley]])