Update appcast.xml

Author: sbarex

appcast.xml

@@ -2,6 +2,33 @@
 <rss xmlns:sparkle="http://www.andymatuschak.org/xml-namespaces/sparkle" version="2.0">
     <channel>
         <title>Syntax Highlight</title>
+        <item>
+            <title>2.1.15</title>
+            <pubDate>ven, 5 lug 2022 9:00:00 +0100</pubDate>
+            <sparkle:minimumSystemVersion>10.15</sparkle:minimumSystemVersion>
+            <enclosure 
+                       type="application/octet-stream" 
+                       url="https://github.com/sbarex/SourceCodeSyntaxHighlight/releases/download/2.1.15/Syntax.Highlight.zip" 
+                       sparkle:shortVersionString="2.1.15" sparkle:version="64" 
+                       sparkle:edSignature="V/aUBlyoqL65HsFR3lnN2J46+ecr2nh9FCrYrHW0/SVltC8SCbvXhx8HbKyByGyUNe/T+7InGM7YpTmgaqDaDg==" length="14772232"
+            />
+            <description><![CDATA[
+                <h2>Release 2.1.15 (64)</h2>
+                <p>New features:</p>
+                <ul>
+                    <li>Added support for JSON with Comments (<code>.jsonc</code>).</li>
+                    <li>Added support for OpenSSH RSA public key (<code>.pub</code>) as </i>plain text</i>.</li>
+                </ul>
+                <p>Bug fix:</p>
+                <ul>
+                    <li>Fixed bug in assigning special settings for certain UTIs. </li>
+                </ul>
+
+                <p><a href="https://github.com/sbarex/SourceCodeSyntaxHighlight/blob/master/CHANGELOG.md">See the complete changelog.</a></p>
+            ]]>
+            </description>
+        </item>
+        
         <item>
             <title>2.1.14</title>
             <pubDate>ven, 24 giu 2022 17:01:00 +0100</pubDate>