xfce4 add* ver. bump

desktop/xfce/addon/mousepad/pspec.xml

@@ -15,7 +15,7 @@
         <Description>
             Mousepad aims to be an easy-to-use and fast editor. Our target is an editor for quickly editing text files, not a development environment or an editor with a huge bunch of plugins. On the other hand we try to use the latest Gtk+ features available, which means that if Gtk adds something new in a major release that is useful for the editor, we will likely bump the Gtk dependency and integrate this new feature in Mousepad.
         </Description>
-        <Archive sha1sum="2b18d39ab6c38f2cbeabf5c74c0f9d47763535c5" type="tarbz2">https://archive.xfce.org/src/apps/mousepad/0.5/mousepad-0.5.2.tar.bz2</Archive>
+        <Archive sha1sum="b6a4d2cdc91d2b4ae8d941603d4dcc677a28c7d0" type="tarbz2">https://archive.xfce.org/src/apps/mousepad/0.5/mousepad-0.5.4.tar.bz2</Archive>
         <BuildDependencies>
             <Dependency>intltool</Dependency>
             <Dependency>gtk3-devel</Dependency>
@@ -46,6 +46,13 @@
     </Package>
 
     <History>
+        <Update release="4">
+            <Date>2021-04-10</Date>
+            <Version>0.5.4</Version>
+            <Comment>Version bump.</Comment>
+            <Name>Mustafa Cinasal</Name>
+            <Email>muscnsl@gmail.com</Email>
+        </Update>
         <Update release="3">
             <Date>2021-02-02</Date>
             <Version>0.5.2</Version>