patch 8.2.3719: MS-Windows: test sometimes runs into existing swap file

Problem:    MS-Windows: test sometimes runs into existing swap file.
Solution:   Use a different file name.
diff --git a/src/version.c b/src/version.c
index cf8f945..d977c65 100644
--- a/src/version.c
+++ b/src/version.c
@@ -754,6 +754,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    3719,
+/**/
     3718,
 /**/
     3717,