Stop inheriting from object. It's unneeded on Python 3+. (#8675)

certbot-ci/certbot_integration_tests/certbot_tests/context.py

@@ -7,7 +7,7 @@ import tempfile
 from certbot_integration_tests.utils import certbot_call
 
 
-class IntegrationTestsContext(object):
+class IntegrationTestsContext:
     """General fixture describing a certbot integration tests context"""
     def __init__(self, request):
         self.request = request

certbot-ci/certbot_integration_tests/utils/acme_server.py

@@ -23,7 +23,7 @@ from certbot_integration_tests.utils import proxy
 from certbot_integration_tests.utils.constants import *
 
 
-class ACMEServer(object):
+class ACMEServer:
     """
     ACMEServer configures and handles the lifecycle of an ACME CA server and an HTTP reverse proxy
     instance, to allow parallel execution of integration tests against the unique http-01 port

certbot-ci/certbot_integration_tests/utils/dns_server.py

@@ -21,7 +21,7 @@ BIND_BIND_ADDRESS = ("127.0.0.1", 45953)
 BIND_TEST_QUERY = bytearray.fromhex("0011cb37000000010000000000000000010003")
 
 
-class DNSServer(object):
+class DNSServer:
     """
     DNSServer configures and handles the lifetime of an RFC2136-capable server.
     DNServer provides access to the dns_xdist parameter, listing the address and port