patch 8.2.3296: Vim9: cannot add a number to a float

Problem:    Vim9: cannot add a number to a float.
Solution:   Accept a number if the destination is a float. (closes #8703)
diff --git a/src/version.c b/src/version.c
index cc8300b..c6852f1 100644
--- a/src/version.c
+++ b/src/version.c
@@ -756,6 +756,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    3296,
+/**/
     3295,
 /**/
     3294,