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)
diff --git a/src/version.c b/src/version.c
index 61a9f95..cf96f40 100644
--- a/src/version.c
+++ b/src/version.c
@@ -743,6 +743,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    239,
+/**/
     238,
 /**/
     237,