cherry-pick bf666e9

…in Python 3.14

fixes resource warnings in Python 3.14

> Ubuntu with Python pypy3.10
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Using a locally compiled OpenLDAP impossible without this as libtool
wrappers eat argv[0] of the symlinked binaries.

Using a locally compiled OpenLDAP still often needs changes to the
configuration, this should be a reasonably easy step forward.

and `ReconnectLDAPObject` to be consistent with `initialize()`.

Fixes: 7af3125
Issue: python-ldap#465

Add tests test_valid_attrlist_parameter_types and
test_invalid_attrlist_parameter_types which test the behaviour
when passing different Python types.

All iterables which return only strings should pass, everything else should
raise a TypeError.

Function `PySequence_Length` can return -1 on iterables like `dict`.
The following PyMem_NEW still succeeds due `PyMem_NEW(char *, -1 + 1)`
being equivalent to `char** PyMem_Malloc(1)`, which then can result in a
segmentation fault later on.

Solution: Use `seq` and `PySequence_Size` to determine the size of
the sequence. This way any iterable which contains only strings can be used.

Co-authored-by: Christian Heimes <[email protected]>