patch 8.1.1725: MS-Windows: E325 message may use incorrect date format

Problem:    MS-Windows: E325 message may use incorrect date format.
Solution:   Convert strftime() result to 'encoding'.  Also make the message
            translatable. (Ken Takata, closes #4685, closes #4681)
diff --git a/src/version.c b/src/version.c
index 8a98f51..afdefb2 100644
--- a/src/version.c
+++ b/src/version.c
@@ -778,6 +778,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1725,
+/**/
     1724,
 /**/
     1723,