[GR-46580] Skip transiently failing test in non-graalpython CI

Author: timfel

graalpython/com.oracle.graal.python.test/src/tests/test_fcntl.py

@@ -99,6 +99,7 @@ def test_flock_s_and_x(self):
 
     @unittest.skipUnless(__graalpython__.posix_module_backend() != 'java', 'No support in Truffle API (GR-28740)')
     @unittest.skipUnless(sys.platform != 'darwin', 'MacOSX does not have flock utility')
+    @unittest.skipUnless("graalpython" in os.environ.get("BITBUCKET_REPO_URL", "graalpython"), "Do not run this in auxillary CI jobs, it can be flaky")
     def test_flock_s_and_s(self):
         os.close(os.open(TEST_FILENAME_FULL_PATH, os.O_WRONLY | os.O_CREAT))
         file = os.open(TEST_FILENAME_FULL_PATH, os.O_WRONLY)