Pandas FutureWarning: Could not cast to int64

[R-Palazzo]

Problem Description

Running the sdv/tests with pytests raised the following pandas warning:

FutureWarning: Could not cast to int64, falling back to object. This behavior is deprecated. In a future version, when a dtype is passed to 'DataFrame', either all columns will be cast to that dtype, or a TypeError will be raised.

Expected behavior

We want to modify the code to no longer get this warning.

Additional context

Here is given the code lines in sdv that raised the warning. Because this list may be incomplete, it would be nice to check after the correction that the warning is not in the warning summary of pytests.

Lines to be modified:

/tests/unit/multi_table/test_hma.py:322
/tests/unit/multi_table/test_hma.py:279
/tests/unit/multi_table/test_hma.py:326
/tests/unit/multi_table/test_hma.py:332
/tests/unit/multi_table/test_hma.py:285