Update appdata and security.md

Author: paolostivanin

SECURITY.md

@@ -6,7 +6,8 @@ The following list describes whether a version is eligible or not for security u
 
 | Version | Supported          | EOL         |
 |---------|--------------------|-------------|
-| 3.5.x   | :white_check_mark: | -           |
+| 3.6.x   | :white_check_mark: | -           |
+| 3.5.x   | :white_check_mark: | 31-Mar-2024 |
 | 3.4.1   | :white_check_mark: | 31-May-2024 |
 | 3.4.0   | :x:                | 29-Feb-2024 |
 | 3.3.x   | :x:                | 29-Feb-2024 |

data/com.github.paolostivanin.OTPClient.appdata.xml

@@ -89,6 +89,17 @@
   </content_rating>
 
   <releases>
+    <release version="3.6.0" date="2024-03-11">
+      <description>
+        <p>OTPClient 3.6.0 brings a new feature and internal improvements:</p>
+        <ul>
+          <li>NEW: add possibility to import plain/encrypted backups using the CLI</li>
+          <li>FIX: make GUI and CLI independent, so that CLI only can be built and installed without GTK.</li>
+          <li>FIX: check file size against memlock before importing a backup</li>
+          <li>FIX: code cleanup and internal refactoring</li>
+        </ul>
+      </description>
+    </release>
     <release version="3.5.2" date="2024-03-08">
       <description>
         <p>OTPClient 3.5.2 brings some small improvements:</p>