patch 8.2.2552: Vim9: no reason to consider "{{{{{{{{" a command

Problem:    Vim9: no reason to consider "{{{{{{{{" a command.
Solution:   Just use "{". (issue #7904)
diff --git a/src/version.c b/src/version.c
index 07c793d..dc6a16c 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    2552,
+/**/
     2551,
 /**/
     2550,