Add missing entry (0.15.2)

We released this minor version to fix some bugs, but didn't add it to
the changelog in the repo, so let's fix this.

debian/changelog

@@ -1,3 +1,14 @@
+adsys (0.15.2) oracular; urgency=medium
+
+  [ Davi Henrique ]
+  * Ignore casing when fetching Registry.pol (LP: #2080390)
+  * Add configurable timeout for listing GPOs (LP: #2081966)
+
+  [ Felipe Alencastro ]
+  * Add support for DCONF usb settings (LP: #2081968)
+
+ -- Denison Barbosa <[email protected]>  Wed, 25 Sep 2024 08:06:40 -0400
+
 adsys (0.15.1) oracular; urgency=medium
 
   * Fix version based tests on released version