fix: queue_app/requirements.txt to reduce vulnerabilities

The following vulnerabilities are fixed by pinning transitive dependencies:
- https://snyk.io/vuln/SNYK-PYTHON-JINJA2-9292516

Author: snyk-bot

queue_app/requirements.txt

@@ -7,7 +7,7 @@ Flask==1.1.2
 importlib-metadata==1.6.0
 isort==4.3.21
 itsdangerous==1.1.0
-Jinja2==2.11.2
+Jinja2==3.1.6
 kombu==4.6.8
 lazy-object-proxy==1.4.3
 MarkupSafe==1.1.1