patch 9.1.1033: tests: shaderslang was removed from test_filetype erroneously

Problem:  tests: shaderslang was removed from test_filetype erroneously
          (Christian Clason, after v9.1.1030)
Solution: restore the test

Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/src/version.c b/src/version.c
index 4006ffb..6e6b651 100644
--- a/src/version.c
+++ b/src/version.c
@@ -705,6 +705,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1033,
+/**/
     1032,
 /**/
     1031,