patch 8.2.3075: xxd always reports an old version string

Problem:    Xxd always reports an old version string. (Åsmund Ervik)
Solution:   Update the version string with the last known change date.
            (Jürgen Weigert, closes #8475)

src/version.c

@@ -755,6 +755,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    3075,
 /**/
     3074,
 /**/