Update dependencies in requirements.txt

[1Maxnet1]

This is just a version bump. It still works as expected. The currently used rsa version is vulnerable to two CVEs:

• https://devhub.checkmarx.com/cve-details/CVE-2020-13757/?utm_source=jetbrains&utm_medium=referral&utm_campaign=idea
• https://devhub.checkmarx.com/cve-details/CVE-2020-25658/?utm_source=jetbrains&utm_medium=referral&utm_campaign=idea The version bump resolves that.