Fix numpy deprecation warnings

[bouweandela]

Description

Fix the numpy deprecation warnings coming from tests/integration/preprocessor/_regrid/test_extract_point.py:

tests/integration/preprocessor/_regrid/test_extract_point.py::Test::test_extract_point__multiple_both_linear
tests/integration/preprocessor/_regrid/test_extract_point.py::Test::test_extract_point__multiple_both_nearest
tests/integration/preprocessor/_regrid/test_extract_point.py::Test::test_extract_point__multiple_linear
tests/integration/preprocessor/_regrid/test_extract_point.py::Test::test_extract_point__multiple_nearest
tests/integration/preprocessor/_regrid/test_extract_point.py::Test::test_extract_point__single_linear
tests/integration/preprocessor/_regrid/test_extract_point.py::Test::test_extract_point__single_nearest
  /develop/tests/integration/preprocessor/_regrid/test_extract_point.py:22: DeprecationWarning: `np.float` is a deprecated alias for the builtin `float`. To silence this warning, use `float` by itself. Doing this will not modify any behavior and is safe. If you specifically wanted the numpy scalar type, use `np.float64` here.
  Deprecated in NumPy 1.20; for more details and guidance: https://numpy.org/devdocs/release/1.20.0-notes.html#deprecations

tests/integration/preprocessor/_regrid/test_extract_point.py::Test::test_extract_point__multiple_both_linear
  /develop/tests/integration/preprocessor/_regrid/test_extract_point.py:153: DeprecationWarning: `np.float` is a deprecated alias for the builtin `float`. To silence this warning, use `float` by itself. Doing this will not modify any behavior and is safe. If you specifically wanted the numpy scalar type, use `np.float64` here.
  Deprecated in NumPy 1.20; for more details and guidance: https://numpy.org/devdocs/release/1.20.0-notes.html#deprecations

tests/integration/preprocessor/_regrid/test_extract_point.py::Test::test_extract_point__multiple_both_nearest
  /develop/tests/integration/preprocessor/_regrid/test_extract_point.py:181: DeprecationWarning: `np.float` is a deprecated alias for the builtin `float`. To silence this warning, use `float` by itself. Doing this will not modify any behavior and is safe. If you specifically wanted the numpy scalar type, use `np.float64` here.
  Deprecated in NumPy 1.20; for more details and guidance: https://numpy.org/devdocs/release/1.20.0-notes.html#deprecations

tests/integration/preprocessor/_regrid/test_extract_point.py::Test::test_extract_point__multiple_linear
  /develop/tests/integration/preprocessor/_regrid/test_extract_point.py:108: DeprecationWarning: `np.float` is a deprecated alias for the builtin `float`. To silence this warning, use `float` by itself. Doing this will not modify any behavior and is safe. If you specifically wanted the numpy scalar type, use `np.float64` here.
  Deprecated in NumPy 1.20; for more details and guidance: https://numpy.org/devdocs/release/1.20.0-notes.html#deprecations

tests/integration/preprocessor/_regrid/test_extract_point.py::Test::test_extract_point__multiple_nearest
  /develop/tests/integration/preprocessor/_regrid/test_extract_point.py:138: DeprecationWarning: `np.float` is a deprecated alias for the builtin `float`. To silence this warning, use `float` by itself. Doing this will not modify any behavior and is safe. If you specifically wanted the numpy scalar type, use `np.float64` here.
  Deprecated in NumPy 1.20; for more details and guidance: https://numpy.org/devdocs/release/1.20.0-notes.html#deprecations

tests/integration/preprocessor/_regrid/test_extract_point.py::Test::test_extract_point__single_nearest
  /develop/tests/integration/preprocessor/_regrid/test_extract_point.py:68: DeprecationWarning: `np.float` is a deprecated alias for the builtin `float`. To silence this warning, use `float` by itself. Doing this will not modify any behavior and is safe. If you specifically wanted the numpy scalar type, use `np.float64` here.
  Deprecated in NumPy 1.20; for more details and guidance: https://numpy.org/devdocs/release/1.20.0-notes.html#deprecations

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[codecov]

Codecov Report

Merging #1274 (e2e0edc) into main (362eec9) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main    #1274   +/-   ##
=======================================
  Coverage   86.39%   86.39%           
=======================================
  Files         188      188           
  Lines        9167     9167           
=======================================
  Hits         7920     7920           
  Misses       1247     1247           

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[valeriupredoi]

cheers @bouweandela 🍺