patch 9.0.1009: test for catch after interrupt is flaky on MS-Windows

Problem:    Test for catch after interrupt is flaky on MS-Windows.
Solution:   Mark the test as flaky.
diff --git a/src/version.c b/src/version.c
index ce1aba0..b2f1bab 100644
--- a/src/version.c
+++ b/src/version.c
@@ -696,6 +696,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1009,
+/**/
     1008,
 /**/
     1007,