Add OpenBSD 7.3 release art

Artwork by George Mager

73.html

@@ -18,13 +18,13 @@
 <table>
 <tr>
 <td>
-<a href="images/XXX.png">
-<img width="227" height="303" src="images/XXX-s.gif" alt="XXX"></a>
+<a href="images/DryGarden.png">
+<img width="227" height="303" src="images/DryGarden-s.gif" alt="Dry Garden"></a>
 <td>
 Released Apr XXX, 2023. (54th OpenBSD release)<br>
 Copyright 1997-2023, Theo de Raadt.<br>
 <br>
-Artwork by XXX.
+Artwork by George Mager.
 <br>
 <ul>
 <li>See the information on <a href="ftp.html">the FTP page</a> for

artwork.html

@@ -75,6 +75,9 @@ when they attend <a href="hackathons.html">hackathons</a>.
     <th colspan="8">
         Post-CD-ROM Era
 <tr>
+ <td>7.3<br>
+        <a href="73.html">
+        <img height="127" width="90" src="images/DryGarden-s.gif" alt=""></a>
     <td>7.2<br>
         <a href="72.html">
         <img height="127" width="90" src="images/OneFishTwoFish-s.gif" alt=""></a>
@@ -96,10 +99,10 @@ when they attend <a href="hackathons.html">hackathons</a>.
     <td>6.6<br>
         <a href="66.html">
         <img height="127" width="90" src="images/sixdotsix-s.gif" alt=""></a>
+<tr>
     <td>6.5<br>
         <a href="65.html">
         <img height="127" width="90" src="images/Puffystock.gif" alt=""></a>
-<tr>
     <td>6.4<br>
         <a href="64.html">
         <img height="127" width="90" src="images/Puffoil.gif" alt=""></a>