patch 8.2.0431: some compilers don't support using \e for Esc

Problem:    Some compilers don't support using \e for Esc. (Yegappan
            Lakshmanan)
Solution:   use \033 instead.
diff --git a/src/version.c b/src/version.c
index fb4e3a0..dc29a85 100644
--- a/src/version.c
+++ b/src/version.c
@@ -739,6 +739,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    431,
+/**/
     430,
 /**/
     429,