Index: tests/conftest.py
===================================================================
--- tests/conftest.py	(revision ef964d8f15909f313336b5d702ebef7408122d6f)
+++ tests/conftest.py	(revision 100c1d25edd93042cee640c536afe12aae1ed4c0)
@@ -74,4 +74,5 @@
     )
 
+
 @pytest.fixture(scope="session")
 def backend(test_cert, test_key):
@@ -107,4 +108,5 @@
         pytest.skip(f"Backend unavailable or misconfigured: {e}")
 
+
 @pytest.fixture
 def sample_signature(sample_domain, cert_ref_linux):
@@ -112,3 +114,2 @@
                                          certificate_reference=cert_ref_linux,
                                          comment="This is a mock signature")
-