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)
diff --git a/src/version.c b/src/version.c
index f60abaf..466cde1 100644
--- a/src/version.c
+++ b/src/version.c
@@ -756,6 +756,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    3075,
+/**/
     3074,
 /**/
     3073,