Apply ruff/Pylint rule PLR1714

PLR1714 Consider merging multiple comparisons

Author: DimitriPapadopoulos

src/zarr/core/dtype/npy/common.py

@@ -384,7 +384,7 @@ def check_json_float_v2(data: JSON) -> TypeGuard[JSONFloatV2]:
     Bool
         True if the data is a float, False otherwise.
     """
-    if data == "NaN" or data == "Infinity" or data == "-Infinity":
+    if data in {"NaN", "Infinity", "-Infinity"}:
         return True
     return isinstance(data, float | int)