fix: requirements.txt to reduce vulnerabilities

The following vulnerabilities are fixed by pinning transitive dependencies:
- https://snyk.io/vuln/SNYK-PYTHON-CERTIFI-3164749
- https://snyk.io/vuln/SNYK-PYTHON-CERTIFI-5805047
- https://snyk.io/vuln/SNYK-PYTHON-REQUESTS-5595532
- https://snyk.io/vuln/SNYK-PYTHON-URLLIB3-1533435

requirements.txt

@@ -1,16 +1,16 @@
 autopep8==1.5.2
 beautifulsoup4==4.9.0
 bs4==0.0.1
-certifi==2020.4.5.1
+certifi==2023.7.22.1
 chardet==3.0.4
 click==7.1.2
 idna==2.9
 joblib==0.14.1
 nltk==3.6
 pycodestyle==2.6.0
 regex==2020.4.4
-requests==2.23.0
+requests==2.31.0
 soupsieve==2.0
 tqdm==4.45.0
-urllib3==1.25.9
+urllib3==1.26.5
 vaderSentiment==3.3.1