patch 9.0.1646: CI: codecov may take a very long time to run

Problem:    CI: codecov may take a very long time to run.
Solution:   Add a timeout. (Philip Heiduck, closes #12559)
diff --git a/src/version.c b/src/version.c
index 14ede7f..24ce994 100644
--- a/src/version.c
+++ b/src/version.c
@@ -696,6 +696,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1646,
+/**/
     1645,
 /**/
     1644,