patch 8.2.0457: Test_quotestar() often fails when run under valgrind

Problem:    Test_quotestar() often fails when run under valgrind.
Solution:   Wait longer for the GUI to start.
diff --git a/src/version.c b/src/version.c
index 2d29430..4ae2b51 100644
--- a/src/version.c
+++ b/src/version.c
@@ -739,6 +739,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    457,
+/**/
     456,
 /**/
     455,