[releng] Add libadwaita to tarball-conversion

[Michael Catanzaro <mcatanzaro src gnome org>]

commit 9977db3e64ae3a02e0d67d87a6f65ee59fd436eb
Author: Michael Catanzaro <mcatanzaro redhat com>
Date:   Sun Mar 13 17:44:10 2022 -0500

    Add libadwaita to tarball-conversion

 tools/smoketesting/tarball-conversion.config | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/tools/smoketesting/tarball-conversion.config b/tools/smoketesting/tarball-conversion.config
index 15886b4..68042f4 100644
--- a/tools/smoketesting/tarball-conversion.config
+++ b/tools/smoketesting/tarball-conversion.config
@@ -206,6 +206,7 @@
     <package name="libgdata"                    set="core"/>
     <package name="libgee"                      set="core"/>
     <package name="gfbgraph"                    set="core" limit="0.3"/>
+    <package name="libadwaita"                  set="core"/>
     <package name="libgnomekbd"                 set="core"/>
     <package name="libgsf"                      set="core"/>
     <package name="libgxps"                     set="core"/>