patch 8.1.2074: test for SafeState autocommand is a bit flaky

Problem:    Test for SafeState autocommand is a bit flaky.
Solution:   Add to list of flaky tests.

src/testdir/runtest.vim

@@ -307,6 +307,7 @@ endif
 
 " Names of flaky tests.
 let s:flaky_tests = [
+      \ 'Test_autocmd_SafeState()',
       \ 'Test_call()',
       \ 'Test_channel_handler()',
       \ 'Test_client_server()',

src/version.c

@@ -757,6 +757,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    2074,
 /**/
     2073,
 /**/