Add pytest pin (#3113)

Author: dstansby

pyproject.toml

@@ -72,7 +72,8 @@ gpu = [
 # Development extras
 test = [
     "coverage",
-    "pytest",
+    # Pin possibly due to https://github.com/pytest-dev/pytest-cov/issues/693
+    "pytest<8.4",
     "pytest-asyncio",
     "pytest-cov",
     "pytest-accept",

tests/test_metadata/test_consolidated.py

@@ -618,6 +618,7 @@ async def test_use_consolidated_for_children_members(
         expected = ["b", "b/c"]
         assert result == expected
 
+
 @pytest.mark.parametrize("fill_value", [np.nan, np.inf, -np.inf])
 async def test_consolidated_metadata_encodes_special_chars(
     memory_store: Store, zarr_format: ZarrFormat, fill_value: float