Add pytest conftest.py file to suppress warnings with NumPy 2.0 (#3307)

Co-authored-by: actions-bot <[email protected]>
Co-authored-by: Wei Ji <[email protected]>

Author: 3 people

pygmt/conftest.py

@@ -0,0 +1,11 @@
+"""
+conftest.py for pytest.
+"""
+
+import numpy as np
+from packaging.version import Version
+
+# Keep this until we require numpy to be >=2.0
+# Address https://github.com/GenericMappingTools/pygmt/issues/2628.
+if Version(np.__version__) >= Version("2.0.0.dev0+git20230726"):
+    np.set_printoptions(legacy="1.25")  # type: ignore[arg-type]