patch 8.2.2380: Vim9: occasional crash when using try/catch and a timer

Problem:    Vim9: occasional crash when using try/catch and a timer.
Solution:   Save and restore "need_rethrow" when invoking a timer callback.
            (closes #7708)

src/version.c

@@ -750,6 +750,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    2380,
 /**/
     2379,
 /**/