test: Suppress epoll_ctl data race

MarcoFalke · MarcoFalke · commit fa949b3c1325 · 2020-11-11T10:10:31.000+01:00
diff --git a/test/sanitizer_suppressions/tsan b/test/sanitizer_suppressions/tsan
@@ -47,3 +47,4 @@ deadlock:src/qt/test/*
 # External libraries
 deadlock:libdb
 race:libzmq
+race:epoll_ctl  # https://github.com/bitcoin/bitcoin/pull/20218
