Replace obsolete Request package with Axios in test-suite/client

[MartinWheelerMT]

What

• The Request package is installed in test-suite/client but is not used. This removes the packages and updates package.json and package-lock.json accordingly

Why

Request npm package was marked as obsolete a good number of years ago, and is no longer maintained (see request/request#3142). This package represents a critical security risk due to multiple transitive dependencies it introduces, such as form-data:

This needs to be replaced with a maintained package, in this case axios, to ensure critical vulnerabilities are not exposed.

Type of change

Please delete options that are not relevant.

• Internal change (non-breaking change with no effect on the functionality affecting end users)

Checklist:

• I have performed a self-review of my code
• I have made corresponding changes to the documentation where required
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• I have updated the Changelog with details of my change in the UNRELEASED section if this change affects end users.

[github-actions]

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