Update buildmgr main branch documentation

Author: github-actions

buildmgr/main/cmsis.js

@@ -1,7 +1,7 @@
 function writeHeader() {
-    document.write('Version 2.8.0.33');
+    document.write('Version 2.8.0.40');
 };
 
 function writeFooter()  {
-    document.write('Generated on 2025-04-28T06:44:37Z for CMSIS-Build 2.8.0+p33-g79869841 by Arm Ltd. All rights reserved.');
+    document.write('Generated on 2025-05-07T09:51:23Z for CMSIS-Build 2.8.0+p40-g0ecaab77 by Arm Ltd. All rights reserved.');
 };