chore: try adding back upstream

Author: jackwotherspoon

tests/conftest.py

@@ -157,7 +157,7 @@ async def cache(fake_client: CloudSQLClient) -> AsyncGenerator[RefreshAheadCache
 @pytest.fixture
 def dns_server() -> Generator:
     """Setup local DNS server for tests with TXT records."""
-    server = DNSServer.from_toml("tests/test_zones.toml", port=5053, upstream=None)
+    server = DNSServer.from_toml("tests/test_zones.toml", port=5053)
     server.start()
     assert server.is_running
     yield server

tests/unit/test_resolver.py

@@ -42,7 +42,6 @@ async def test_DnsResolver_with_dns_name() -> None:
     """Test DnsResolver resolves TXT record into proper instance connection name."""
     resolver = DnsResolver()
     resolver.port = 5053
-    resolver.lifetime = 10.0
     result = await resolver.resolve("db.example.com")
     assert result == conn_name