Update debian/changelog and release-notes/3.8.4.md for 3.8.4 release

Author: hubot

debian/changelog

@@ -1,3 +1,9 @@
+github-backup-utils (3.8.4) UNRELEASED; urgency=medium
+
+ * On an instance with Actions enabled, incorrect backup and restore settings prevented the storage container name from being restored. This made the logs from that container inaccessible, and caused Actions to create a new storage container in a different location. {% comment %} https://github.com/github/backup-utils-private/pull/651, https://github.com/github/backup-utils-private/pull/459 {% endcomment %}
+
+ -- ghes-releases-team  Fri, 20 Oct 2023 18:49:24 +0000
+
 github-backup-utils (3.8.3) UNRELEASED; urgency=medium
 
   * Fix two issues with binary backup (slow gzip compression and support for restore from instances other than SQL master) #551