disable transient

Author: timfel

graalpython/com.oracle.graal.python.test/src/tests/unittest_tags/test_fcntl.txt

@@ -1,3 +1,5 @@
 test.test_fcntl.TestFcntl.test_flock @ darwin-arm64,darwin-x86_64,linux-aarch64,linux-x86_64,win32-AMD64
+# Disabled due to relatively frequent transient failures
+!test.test_fcntl.FcntlTests.test_flock_x_and_s @ linux-aarch64
 test.test_fcntl.TestFcntl.test_lockf_exclusive @ darwin-arm64,darwin-x86_64,linux-aarch64,linux-x86_64
 test.test_fcntl.TestFcntl.test_lockf_share @ darwin-arm64,darwin-x86_64,linux-aarch64,linux-x86_64