chore: update sparkle version to 2.7

Author: itsjoshpark

.sparkle/appcast.xml

@@ -4,6 +4,26 @@
     <title>Front Row</title>
     <language>en</language>
 
+    <item>
+      <title>v2.7</title>
+      <link>https://github.com/itsjoshpark/FrontRow</link>
+      <sparkle:version>19</sparkle:version>
+      <sparkle:minimumSystemVersion>15.6</sparkle:minimumSystemVersion>
+      <sparkle:fullReleaseNotesLink>https://github.com/itsjoshpark/FrontRow/releases</sparkle:fullReleaseNotesLink>
+      <pubDate>Sun, 11 Jan 2025 05:20:25 +0000</pubDate>
+      <enclosure
+        url="https://github.com/itsjoshpark/FrontRow/releases/download/v2.7/FrontRow_v2.7.dmg"
+        sparkle:edSignature="zZ242uRuYqsODGLYJKbo5t8PaAziTKoqELBAdf9aM6VUHkvs1NtZAagZ/19oXUzW+na54Hvi3jvqY85A/05UCg=="
+        length="3763547"
+        type="application/octet-stream" />
+      <description><![CDATA[
+      <ul>
+      <li>New: Display filename in title bar</li>
+      </ul>
+      ]]>
+      </description>
+    </item>
+
     <item>
       <title>v2.6</title>
       <link>https://github.com/itsjoshpark/FrontRow</link>