Update Membership numbers (#758)

Signed-off-by: Matty Widdop <[email protected]>

Author: MattyTheHacker

sponsor.html

@@ -40,8 +40,8 @@ <h2>392 Members</h2>
     <p>in 2023/24</p>
   </div>
   <div class="stat">
-    <h2>370 Members</h2>
-    <p>as of Nov 2024</p>
+    <h2>421 Members</h2>
+    <p>as of Jan 2025</p>
   </div>
   <div class="stat">
     <h2>15+ Companies</h2>