patch 9.0.0252: cursor in wrong place after virtual text

Problem:    Cursor in wrong place after virtual text.
Solution:   Do not change the length of a virtual text property.
            (closes #10964)
diff --git a/src/version.c b/src/version.c
index 1d1de74..2cd1e50 100644
--- a/src/version.c
+++ b/src/version.c
@@ -732,6 +732,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    252,
+/**/
     251,
 /**/
     250,