Update summary-allowances.html

Author: scottaohara

tests/summary-allowances.html

@@ -46,7 +46,7 @@
 
 	<header>
 	<h1>ARIA in HTML - test cases for <code>summary</code></h1>
-	<p>last updated 07 February 2023</p>
+	<p>last updated 13 February 2023</p>
 	</header>
 	<main>
 		<h2>Tests:</h2>