patch 9.1.0008: NSIS installer includes syntax testdir

Problem:  NSIS installer includes syntax test dumps
          (Yegappan Lakshmanan)
Solution: Exclude syntax/testdir when creating the NSIS installer

fixes: vim/vim-win32-installer#328
closes: #13814

Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/src/version.c b/src/version.c
index d00e802..3839d9c 100644
--- a/src/version.c
+++ b/src/version.c
@@ -705,6 +705,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    8,
+/**/
     7,
 /**/
     6,