openSUSE: 2020:0436-1 Moderate: Python-NLTK Zip Slip Fix

This update for python-nltk fixes the following issues:

Update to 3.4.5 (boo#1146427, CVE-2019-14751):

* CVE-2019-14751: Fixed Zip slip vulnerability in downloader for the

unlikely situation where a user configures their downloader to use a

compromised server (boo#1146427)

Update to 3.4.4:

* fix bug in plot function (probability.py)

* add improved PanLex Swadesh corpus reader

* add Text.generate()

* add QuadgramAssocMeasures

* add SSP to tokenizers * return confidence of best tag from AveragedPerceptron

* make plot methods return Axes objects

* don't require list arguments to PositiveNaiveBayesClassifier.train

* fix Tree classes to work with native Python copy library

* fix inconsistency for NomBank

* fix random seeding in LanguageModel.generate

* fix ConditionalFreqDist mutation on tabulate/plot call

* fix broken links in documentation

* fix misc Wordnet issues

* update installation instructions

Version update...