patch 8.2.1888: Vim9: getbufline(-1, 1, '$') gives an error

Problem:    Vim9: Getbufline(-1, 1, '$') gives an error.
Solution:   Return an empty list. (closes #7180)
diff --git a/src/version.c b/src/version.c
index 16e7a9f..04bc248 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1888,
+/**/
     1887,
 /**/
     1886,