Add PGP fingerprint to encryption instructions on security page (#73)

Author: kchudy

src/pages/security.astro

@@ -291,7 +291,7 @@ const tags = [
           <li>
             Encrypt your message using our PGP public key, available at
             <a href="https://defguard.net/pgp-key.txt">https://defguard.net/pgp-key.txt</a
-            >.
+            > (fingerprint: <code>3CC9 D7FD A5F5 DE35 52D8  806E FA1F 797D FA71 B44A</code>).
           </li>
           <li>
             Allow us reasonable time to investigate and address the issue before any