patch 8.1.1634: terminal test fails when term_getansicolors() is missing

Problem:    Terminal test fails when term_getansicolors() is missing.
            Diff test fails without +rightleft.  (Dominique Pelle)
Solution:   Check if term_getansicolors() is supported. (closes #4597)
diff --git a/src/version.c b/src/version.c
index 20bff05..d1e12c8 100644
--- a/src/version.c
+++ b/src/version.c
@@ -778,6 +778,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1634,
+/**/
     1633,
 /**/
     1632,