bingo: credit Claude and hackyourmom in the footer

Part of the list was collected and verified with Claude, and several
entries came from the hackyourmom data-center map (Cat Eyes OSINT data).
Say so in the footer of the card and data-center pages, in all three
languages, and note that each entry was re-verified against operator
sites and the press.

Assisted-by: Claude:opus-5

views/bingo/dc.erb

@@ -29,6 +29,7 @@
 
   <footer>
     <p><%= t(:footer) %></p>
+    <%== erb :_credits, layout: false %>
     <p>© <%= Date.today.year %> <a href="https://asxp.io">asxp.io</a></p>
   </footer>
 </main>