patch 8.2.0535: regexp patterns not fully tested

Problem:    Regexp patterns not fully tested.
Solution:   Add more regexp tests and others. (Yegappan Lakshmanan,
            closes #5901)
diff --git a/src/version.c b/src/version.c
index 2eadd13..78bb332 100644
--- a/src/version.c
+++ b/src/version.c
@@ -739,6 +739,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    535,
+/**/
     534,
 /**/
     533,