[Bug] String based memory is not validated

[niklassiemer]

According to

pysqa/src/pysqa/base/validate.py

Lines 34 to 37 in 153d293

	if isinstance(memory_max, (int, float)):
	memory_max = value_in_range(
	value=memory_max, value_max=active_queue["memory_max"]
	)

the value of the memory is not checked if it is a string, however,

pysqa/src/pysqa/base/validate.py

Lines 75 to 83 in 153d293

	if value is not None:
	value_, value_min_, value_max_ = [
	(
	_memory_spec_string_to_value(v)
	if v is not None and isinstance(v, str)
	else v
	)
	for v in (value, value_min, value_max)
	]

looks like it capable of checking this!

Indeed, I would like any string for a memory not passing the _is_memory_string check to be rejected by pysqa.