patch 8.2.3073: when cursor is move for block append wrong text is inserted

Problem:    When cursor is move for block append wrong text is inserted.
Solution:   Calculate an offset. (Christian Brabandt, closes #8433,
            closes #8288)
diff --git a/src/version.c b/src/version.c
index f33d7dd..1253251 100644
--- a/src/version.c
+++ b/src/version.c
@@ -756,6 +756,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    3073,
+/**/
     3072,
 /**/
     3071,