Add missing obsolete/provide for libproxy-duktape

Also update the description so it's not a lie any more...

libproxy.spec

@@ -4,7 +4,7 @@
 
 Name:           libproxy
 Version:        0.5.0
-Release:        1%{?dist}
+Release:        2%{?dist}
 Summary:        A library handling all the details of proxy configuration
 
 License:        LGPL-2.1-or-later
@@ -41,15 +41,16 @@ Provides: %{name}-pacrunner = %{version}-%{release}
 Obsoletes: %{name}-pacrunner < %{version}-%{release}
 Provides: %{name}-webkitgtk4 = %{version}-%{release}
 Obsoletes: %{name}-webkitgtk4 < %{version}-%{release}
+Provides: %{name}-duktape = %{version}-%{release}
+Obsoletes: %{name}-duktape < %{version}-%{release}
 
 
 %description
 libproxy offers the following features:
 
-    * extremely small core footprint (< 35K)
-    * no external dependencies within libproxy core
-      (libproxy plugins may have dependencies)
-    * only 4 functions in the stable external API
+    * extremely small core footprint
+    * minimal dependencies within libproxy core
+    * only 4 functions in the stable-ish external API
     * dynamic adjustment to changing network topology
     * a standard way of dealing with proxy settings across all scenarios
     * a sublime sense of joy and accomplishment
@@ -123,6 +124,9 @@ developing applications that use %{name}.
 
 
 %changelog
+* Mon May 22 2023 Adam Williamson <awilliam@redhat.com> - 0.5.0-2
+- Add missing obsolete/provide for libproxy-duktape
+
 * Tue May 16 2023 David King <amigadave@amigadave.com> - 0.5.0-1
 - Update to 0.5.0