Update appcast.xml

Author: sbarex

appcast.xml

@@ -2,6 +2,28 @@
 <rss xmlns:sparkle="http://www.andymatuschak.org/xml-namespaces/sparkle" version="2.0">
     <channel>
         <title>Syntax Highlight</title> 
+        <item>
+            <title>2.1.9</title>
+            <pubDate>gio, 3 mar 2022 18:37:00 +0100</pubDate>
+            <sparkle:minimumSystemVersion>10.15</sparkle:minimumSystemVersion>
+            <enclosure type="application/octet-stream" url="https://github.com/sbarex/SourceCodeSyntaxHighlight/releases/download/2.1.9/Syntax.Highlight.zip" sparkle:shortVersionString="2.1.9" sparkle:version="57" sparkle:edSignature="RinCJWj2xZnG3uAhOFitV3U0tENmB7wItOhq8WQ6uQqaWUfhU80M9fZmdxKM+iZjdV6jTXGth//J0iYVsEDiCw==" length="10692204" />
+            <description><![CDATA[
+                <h2>Release 2.1.9 (57)</h2>
+                <p>New features:</p>
+                <ul>
+                    <li>New mime type criteria for the plain files.</li>
+                    <li>View of the supported formats from the Help menu.</li>
+                </ul>
+                <p>Bug fix:</p>
+                <ul>
+                    <li>Fixed the bug of extra arguments white space.</li>
+                </ul>
+
+                <p><a href="https://github.com/sbarex/SourceCodeSyntaxHighlight/blob/master/CHANGELOG.md">See the complete changelog.</a></p>
+            ]]>
+            </description>
+        </item>
+        
         <item>
             <title>2.1.8</title>
             <pubDate>sab, 12 feb 2022 12:18:00 +0100</pubDate>