patch 8.2.1123: Python 3 test is old style

Problem:    Python 3 test is old style.
Solution:   Turn into new style test. (Yegappan Lakshmanan, closes #6385)
diff --git a/src/version.c b/src/version.c
index 00aca2b..6908662 100644
--- a/src/version.c
+++ b/src/version.c
@@ -755,6 +755,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1123,
+/**/
     1122,
 /**/
     1121,