Update dependency Flask to v2

[mend-for-github-com]

This PR contains the following updates:

Package	Update	Change
Flask (changelog)	major	==1.1.1 -> ==2.2.5

By merging this PR, the below vulnerabilities will be automatically resolved:

Severity	CVSS Score	CVE
High	7.5	CVE-2023-30861

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[cortx-admin]

Can one of the admins verify this patch?

[stale]

This issue/pull request has been marked as needs attention as it has been left pending without new activity for 4 days. Tagging @83bhp @andkononykhin2 for appropriate assignment. Sorry for the delay & Thank you for contributing to CORTX. We will get back to you as soon as possible.

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Thanks for your contribution!
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[shailesh-vaidya]

Closing as an obsolete