Avoid trapz DeprecationWarning on numpy 2 #1216

Job	Run time
test-linux (3.10)	1m 42s
test-linux (3.10, uncertainties==3.1.6)	1m 41s
test-windows (3.10, numpy>=1.23,<2.0.0)	52s
test-macos (3.10)	1m 13s
test-windows (3.11, numpy>=1.23,<2.0.0)	54s
test-linux (3.10, uncertainties>=3.1.6,<4.0.0)	1m 44s
test-macos (3.10, numpy>=1.23,<2.0.0)	1m 14s
test-windows (3.12, numpy>=1.23,<2.0.0)	1m 0s
test-linux (3.10, numpy>=1.23,<2.0.0)	1m 50s
test-macos (3.11)	53s
test-macos (3.11, numpy>=1.23,<2.0.0)	1m 3s
test-linux (3.10, numpy>=1.23,<2.0.0, uncertainties==3.1.6)	2m 32s
test-macos (3.12)	54s
test-linux (3.10, numpy>=1.23,<2.0.0, uncertainties>=3.1.6,<4.0.0)	2m 32s
test-linux (3.11)	1m 34s
test-macos (3.12, numpy>=1.23,<2.0.0)	1m 7s
test-linux (3.11, uncertainties==3.1.6)	2m 6s
test-linux (3.11, uncertainties>=3.1.6,<4.0.0)	1m 33s
test-linux (3.11, numpy>=1.23,<2.0.0)	1m 40s
test-linux (3.11, numpy>=1.23,<2.0.0, uncertainties==3.1.6)	2m 19s
test-linux (3.11, numpy>=1.23,<2.0.0, uncertainties>=3.1.6,<4.0.0)	2m 15s
test-linux (3.12)	2m 3s
test-linux (3.12, uncertainties==3.1.6)	2m 6s
test-linux (3.12, uncertainties>=3.1.6,<4.0.0)	2m 28s
test-linux (3.12, numpy>=1.23,<2.0.0)	2m 15s
test-linux (3.12, numpy>=1.23,<2.0.0, uncertainties==3.1.6)	3m 4s
test-linux (3.12, numpy>=1.23,<2.0.0, uncertainties>=3.1.6,<4.0.0)	3m 5s
test-linux (3.10, numpy, matplotlib==2.2.5)	3m 31s
test-linux (3.10, numpy, uncertainties, sparse xarray netCDF4 dask[complete]==2023.4.0 graphviz b...	3m 57s
	55m 7s

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