[Snyk] Fix for 5 vulnerabilities

[geoscoutCJ]

This PR was originally created by Snyk.

This PR is to fix five 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.
Flask 2.2.5 has requirement click>=8.0, but you have click 7.1.2.
Flask 2.2.5 has requirement itsdangerous>=2.0, but you have itsdangerous 1.1.0.
Flask 2.2.5 has requirement Jinja2>=3.0, but you have Jinja2 2.11.3.

Vulnerabilities that will be fixed

By pinning:

Severity	Priority Score (*)	Issue	Upgrade	Breaking Change	Exploit Maturity
	554/1000 Why? Has a fix available, CVSS 6.8	Insufficient Verification of Data Authenticity SNYK-PYTHON-CERTIFI-3164749	certifi: 2020.12.5 -> 2022.12.7	No	No Known Exploit
	589/1000 Why? Has a fix available, CVSS 7.5	Information Exposure SNYK-PYTHON-FLASK-5490129	flask: 1.1.2 -> 2.2.5	No	No Known Exploit
	519/1000 Why? Has a fix available, CVSS 6.1	Information Exposure SNYK-PYTHON-REQUESTS-5595532	requests: 2.25.1 -> 2.31.0	No	No Known Exploit
	344/1000 Why? Has a fix available, CVSS 2.6	Access Restriction Bypass SNYK-PYTHON-WERKZEUG-3319935	werkzeug: 1.0.1 -> 2.2.3	No	No Known Exploit
	589/1000 Why? Has a fix available, CVSS 7.5	Denial of Service (DoS) SNYK-PYTHON-WERKZEUG-3319936	werkzeug: 1.0.1 -> 2.2.3	No	No Known Exploit

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