[Snyk] Security upgrade gunicorn from 20.0.4 to 22.0.0

[rlowe]

This PR was automatically created by Snyk using the credentials of a real user.

Snyk has created this PR to fix one or more vulnerable packages in the `pip` dependencies of this project.

Changes included in this PR

• Changes to the following files to upgrade the vulnerable dependencies to a fixed version:
  • requirements.txt

⚠️ Warning

Werkzeug 2.2.3 has requirement MarkupSafe>=2.1.1, but you have MarkupSafe 1.1.1.
requests 2.21.0 has requirement urllib3<1.25,>=1.21.1, but you have urllib3 2.0.7.
paramiko 3.4.0 has requirement cryptography>=3.3, but you have cryptography 2.8.
Flask 2.2.5 has requirement Jinja2>=3.0, but you have Jinja2 2.10.3.
Flask 2.2.5 has requirement itsdangerous>=2.0, but you have itsdangerous 1.1.0.
Flask 2.2.5 has requirement click>=8.0, but you have click 6.7.
advocate 1.0.0 has requirement urllib3<2.0,>=1.22, but you have urllib3 2.0.7.

Vulnerabilities that will be fixed

By pinning:

Severity	Priority Score (*)	Issue	Upgrade	Breaking Change	Exploit Maturity
	225/1000 Why? Confidentiality impact: None, Integrity impact: High, Availability impact: None, Scope: Unchanged, Exploit Maturity: Proof of Concept, User Interaction (UI): None, Privileges Required (PR): None, Attack Complexity: Low, Attack Vector: Network, EPSS: 0.00043, Social Trends: No, Days since published: 1, Reachable: No, Transitive dependency: No, Is Malicious: No, Business Criticality: High, Provider Urgency: High, Package Popularity Score: 99, Impact: 5.99, Likelihood: 3.74, Score Version: V5	HTTP Request Smuggling SNYK-PYTHON-GUNICORN-6615672	gunicorn: 20.0.4 -> 22.0.0	No	Proof of Concept

(*) Note that the real score may have changed since the PR was raised.

Some vulnerabilities couldn't be fully fixed and so Snyk will still find them when the project is tested again. This may be because the vulnerability existed within more than one direct dependency, but not all of the affected dependencies could be upgraded.

Check the changes in this PR to ensure they won't cause issues with your project.

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