patch 9.0.1562: mixing package managers is not a good idea

Problem:    Mixing package managers is not a good idea.
Solution:   Install gcc 13 with apt-get. (closes #12405)
diff --git a/src/version.c b/src/version.c
index 9f64843..80244d6 100644
--- a/src/version.c
+++ b/src/version.c
@@ -696,6 +696,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1562,
+/**/
     1561,
 /**/
     1560,