fix test issues

.github/workflows/python.yml

@@ -11,6 +11,6 @@ jobs:
         with:
           python-version: '3.8'
       - name: Install Tox
-        run: pip install tox==3.28.0
+        run: pip install tox==4.11.0
       - name: Run Tox
         run: tox -e style,py38,cover

ducktape/cluster/remoteaccount.py

@@ -18,21 +18,21 @@
 # Changing it due to https://github.com/redpanda-data/redpanda/issues/6792
 paramiko.packet.Packetizer.REKEY_BYTES = pow(2, 32) # noqa
 
-from contextlib import contextmanager
-import logging
-import os
-from paramiko import SSHClient, SSHConfig, MissingHostKeyPolicy
-from paramiko.ssh_exception import SSHException, NoValidConnectionsError
-import shutil
-import signal
-import socket
-import stat
-import tempfile
-import warnings
-
-from ducktape.utils.http_utils import HttpMixin
-from ducktape.utils.util import wait_until
-from ducktape.errors import DucktapeError
+from contextlib import contextmanager # noqa
+import logging # noqa
+import os # noqa
+from paramiko import SSHClient, SSHConfig, MissingHostKeyPolicy # noqa
+from paramiko.ssh_exception import SSHException, NoValidConnectionsError # noqa
+import shutil # noqa
+import signal # noqa
+import socket # noqa
+import stat # noqa
+import tempfile # noqa
+import warnings # noqa
+
+from ducktape.utils.http_utils import HttpMixin # noqa
+from ducktape.utils.util import wait_until # noqa
+from ducktape.errors import DucktapeError # noqa
 
 
 def check_ssh(method):

requirements-test.txt

@@ -1,4 +1,4 @@
-pytest==6.1.0
+pytest==6.2.0
 # 4.0 drops py27 support
 mock==4.0.2
 psutil==5.7.2