test 766: flag as timing-dependent

We have noticed this test as failing when run in parallel in Fedora and
Amazon Linux:
https://src.fedoraproject.org/rpms/curl/c/389f1409549178f639afa49f478c544fdaa87be2?branch=rawhide

Debian did not have issues but given there are other FTP tests flagged
as timing-dependent, it makes sense to flag this one too if we notice
failures in other OSes.

Closes #21155

diff --git a/tests/data/test766 b/tests/data/test766
index be14e5b9f3d4870a4cf9869c767ff341dece254e..6b08c7226f2727ff80e288e8fb7856ea50740dc2 100644 (file)
--- a/tests/data/test766
+++ b/tests/data/test766
@@ -5,6 +5,7 @@
 FTP
 PORT
 CURLOPT_SOCKOPTFUNCTION
+timing-dependent
 </keywords>
 </info>