patch 8.2.1762: when a timer uses :stopinsert completion isn't stopped

Problem:    When a timer uses :stopinsert Insert mode completion isn't
            stopped. (Stanley Chan)
Solution:   Call ins_compl_prep(ESC).
diff --git a/src/version.c b/src/version.c
index ccedf64..d600618 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1762,
+/**/
     1761,
 /**/
     1760,