fix: requirements.txt to reduce vulnerabilities

The following vulnerabilities are fixed by pinning transitive dependencies:
- https://snyk.io/vuln/SNYK-PYTHON-EVENTLET-6514873
- https://snyk.io/vuln/SNYK-PYTHON-PYLINT-6514864

requirements.txt

@@ -19,7 +19,7 @@ cryptography==37.0.4
 dnspython==1.16.0
 dwollav2==2.2.0
 email-validator==1.1.2
-eventlet==0.30.2
+eventlet==0.34.3
 flasgger==0.9.5
 Flask==1.1.2
 Flask-BabelEx==0.9.4
@@ -58,7 +58,7 @@ plaid-python==8.0.0
 psycopg2-binary==2.9.3
 pycparser==2.20
 pyfcm==1.5.4
-pylint==2.6.0
+pylint==2.6.1
 pyOpenSSL==20.0.1
 pypng==0.0.20
 PyQRCode==1.2.1