Pin pyarrow>=13 and use pytest.mark.skipif on string_view type test

Lower pyarrow pin from 16 to 13, and added a skipif pytest marker to the `test_to_numpy_pyarrow_array_pyarrow_dtypes_string[string_view]` unit test to not run when pyarrow<16 is installed. Setting a pin on pyarrow>=13 so that datetime64 unit preservation is handled, xref apache/arrow#33321.

pygmt/tests/test_clib_to_numpy.py

@@ -10,6 +10,7 @@
 import pandas as pd
 import pytest
 from packaging.version import Version
+from pygmt._show_versions import _get_module_version
 from pygmt.clib.conversion import _to_numpy
 from pygmt.helpers.testing import skip_if_no
 
@@ -323,7 +324,13 @@ def test_to_numpy_pyarrow_array_pyarrow_dtypes_numeric_with_na(dtype, expected_d
         "utf8",  # alias for string
         "large_string",
         "large_utf8",  # alias for large_string
-        "string_view",
+        pytest.param(
+            "string_view",
+            marks=pytest.mark.skipif(
+                Version(_get_module_version("pyarrow")) < Version("16"),
+                reason="string_view type was added since pyarrow 16",
+            ),
+        ),
     ],
 )
 def test_to_numpy_pyarrow_array_pyarrow_dtypes_string(dtype):

pyproject.toml

@@ -43,7 +43,7 @@ all = [
     "contextily>=1.2",
     "geopandas>=0.14",
     "IPython>=8",  # 'ipython' is not the correct module name.
-    "pyarrow>=16",
+    "pyarrow>=13",
     "rioxarray>=0.14",
 ]