patch 8.2.4843: treating CTRL + ALT as AltGr is not backwards compatible

Problem:    Win32 GUI: Treating CTRL + ALT as AltGr is not backwards
            compatible. (Axel Bender)
Solution:   Make a difference between left and right menu keys.
            (closes #10308)
diff --git a/src/version.c b/src/version.c
index 0d95a7c..ab771fe 100644
--- a/src/version.c
+++ b/src/version.c
@@ -747,6 +747,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    4843,
+/**/
     4842,
 /**/
     4841,