patch 8.2.0239: MS-Windows: 'env' job option does not override existing vars

Problem:    MS-Windows: 'env' job option does not override existing
            environment variables.  (Tim Pope)
Solution:   Set the environment variables later. (Yasuhiro Matsumoto,
            closes #5485, closes #5608)

src/version.c

@@ -742,6 +742,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    239,
 /**/
     238,
 /**/