Set release codename.

debian/changelog

@@ -1,4 +1,4 @@
-libsysstat (0.4.6-0ubuntu1) UNRELEASED; urgency=medium
+libsysstat (0.4.6-0ubuntu1) lunar; urgency=medium
 
   * New upstream release 0.4.6.
   * Overhauled watch file to make it compatible with GitHub again.
@@ -10,7 +10,7 @@ libsysstat (0.4.6-0ubuntu1) UNRELEASED; urgency=medium
   * Removed trailing whitespace from changelog.
   * Changed Vcs-Browser and Vcs-Git fields to point to Gitea rather than Phab.
 
- -- Aaron Rainbolt <arraybolt3@ubuntu.com>  Mon, 28 Nov 2022 15:46:29 -0600
+ -- Aaron Rainbolt <arraybolt3@ubuntu.com>  Mon, 28 Nov 2022 16:26:08 -0600
 
 libsysstat (0.4.5-0ubuntu1) impish; urgency=medium