patch 8.2.2527: Vim9: lambda return type is not determined at script level

Problem:    Vim9: lambda return type is not determined at script level.
Solution:   Compile the lambda to get the return type. (closes #7843)
diff --git a/src/version.c b/src/version.c
index ea34510..0fb8896 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    2527,
+/**/
     2526,
 /**/
     2525,