patch 8.1.0675: text property column in screen columns is not practical

Problem:    Text property column is screen columns is not practical.
Solution:   Use byte values for the column.
diff --git a/src/version.c b/src/version.c
index 17f7733..e3db6e5 100644
--- a/src/version.c
+++ b/src/version.c
@@ -800,6 +800,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    675,
+/**/
     674,
 /**/
     673,