Bug#1095362: opm-common: FTBFS: 99% tests passed, 1 tests failed out of 194

[Markus Blatt]

Hi,

thanks for noticing.

The failing test is due tp Python 3.12 using a more accurate summation
algorithm (Neumaier) for summation of floats than previous versions.
I'll fix this by using numpy.sum for the failing test.

Best,

Markus