patch 8.2.4271: MS-Windows: cannot build with Ruby 3.1.0

Problem:    MS-Windows: cannot build with Ruby 3.1.0.
Solution:   Adjust the DLL name and include directory. (Ken Takata,
            closes #9666)
diff --git a/src/version.c b/src/version.c
index a8db110..9173627 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    4271,
+/**/
     4270,
 /**/
     4269,