Update appcast.xml

Author: EmeraldLoc

appcast.xml

@@ -2,6 +2,14 @@
 <rss xmlns:sparkle="http://www.andymatuschak.org/xml-namespaces/sparkle" version="2.0">
     <channel>
         <title>sm_osx</title>
+        <item>
+            <title>1.3.0.3</title>
+            <pubDate>Fri, 28 Apr 2023 16:12:17 -0500</pubDate>
+            <sparkle:version>5</sparkle:version>
+            <sparkle:shortVersionString>1.3.0.3</sparkle:shortVersionString>
+            <sparkle:minimumSystemVersion>13.0</sparkle:minimumSystemVersion>
+            <enclosure url="https://github.com/EmeraldLoc/sm_osx/releases/latest/download/sm_osx.zip" length="1811024" type="application/octet-stream" sparkle:edSignature="IgJJ6Yggm5PdzeVIfiXx3yf6uCdILvHWAG8dJ37L7LYSbZqBOKmKDibCyIxjHu2l1jD+GkoZnbUORVeTY2nlCQ=="/>
+        </item>
         <item>
             <title>1.3.0.2</title>
             <pubDate>Tue, 18 Apr 2023 12:38:29 -0500</pubDate>