patch 8.1.1170: terminal ANSI color test does not cover all colors

Problem:    Terminal ANSI color test does not cover all colors.
Solution:   Use the color number, the name is not always resulting in an ANSI
            color when t_Co is 256.
diff --git a/src/version.c b/src/version.c
index 367b170..475f828 100644
--- a/src/version.c
+++ b/src/version.c
@@ -772,6 +772,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1170,
+/**/
     1169,
 /**/
     1168,