`From` predicate does not use watermark argument correctly

[davidkhess]

Unless I'm missing something there's a bug at https://github.com/ionelmc/python-hunter/blob/master/src/hunter/predicates.py#L389C1-L390C1

            if delta_depth < self.watermark:

I believe the polarity of this check is reversed and should be:

            if delta_depth > self.watermark:

As it is, for any positive value of watermark, the From will correctly trigger on condition but on the next event it will immediately disable regardless of the actual depth requested by watermark.