Mitigating some snyk issues

requirements.txt

@@ -2,7 +2,7 @@ alembic==1.*
 argcomplete==1.10.0
 backports-datetime-fromisoformat==1.0.0
 beautifulsoup4==4.8.0
-certifi~=2018.11.29
+certifi~=2023.7.22
 chardet==3.*
 dill==0.2.9
 docx2txt~=0.6
@@ -12,13 +12,14 @@ imbalanced-learn==0.3.3
 lxml~=4.6.3
 # https://github.com/mattgwwalker/msg-extractor/zipball/master
 extract-msg==0.23.1
-nltk~=3.4.5
+nltk~=3.6.6
 numpy==1.16.2
 pdfminer.six==20191110 #<-- go back to this after the shebang fix is released (see https://github.com/goulu/pdfminer/issues/27)
 # #https://github.com/goulu/pdfminer/zipball/e6ad15af79a26c31f4e384d8427b375c93b03533#egg=pdfminer.six
-Pillow~=8.1.2
+Pillow~=8.4.0
 #pocketsphinx==0.1.3
 psycopg2==2.7.5
+python-dateutil
 python-pptx~=0.6.5
 python-json-logger
 requests==2.21.0