Merge pull request avinashkranjan#1197 from avinashkranjan/snyk-fix-a9e6b62ca70be7f7b656d89f809406f7

[Snyk] Security upgrade nltk from 3.2.4 to 3.6.6

Author: avinashkranjan

Text_Summary/requirements.txt

@@ -1,3 +1,3 @@
-nltk==3.2.4
+nltk==3.6.6
 numpy==1.22.0rc1
 networkx==2.5