patch 8.2.2953: Vim9: leaking memory when using heredoc script

Problem:    Vim9: leaking memory when using heredoc script.
Solution:   Free the first line.
diff --git a/src/version.c b/src/version.c
index 59cd0ce..1e9a787 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    2953,
+/**/
     2952,
 /**/
     2951,