patch 8.2.3140: MS-Windows: ipv6 channel test is very flaky also without GUI

Problem:    MS-Windows: ipv6 channel test is very flaky also without the GUI.
Solution:   Skip the test also without the GUI.
diff --git a/src/version.c b/src/version.c
index a17fa0f..0ad5511 100644
--- a/src/version.c
+++ b/src/version.c
@@ -756,6 +756,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    3140,
+/**/
     3139,
 /**/
     3138,