patch 8.1.2067: no tests for SafeState and SafeStateAgain

Problem:    No tests for SafeState and SafeStateAgain.
Solution:   Add tests.
diff --git a/src/version.c b/src/version.c
index 2b2474f..d163fba 100644
--- a/src/version.c
+++ b/src/version.c
@@ -758,6 +758,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    2067,
+/**/
     2066,
 /**/
     2065,