patch 8.2.4423: "make nvcmdidxs" fails

Problem:    "make nvcmdidxs" fails.
Solution:   Use "-S" instead of "-u" to source the script.
diff --git a/src/version.c b/src/version.c
index 2e3fa4f..7d585ba 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    4423,
+/**/
     4422,
 /**/
     4421,