patch 8.1.1861: only some assert functions can be used as a method

Problem:    Only some assert functions can be used as a method.
Solution:   Allow using most assert functions as a method.
diff --git a/src/version.c b/src/version.c
index cf96d64..6af4442 100644
--- a/src/version.c
+++ b/src/version.c
@@ -770,6 +770,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1861,
+/**/
     1860,
 /**/
     1859,