[BUG] Use go-tuf version v0.3.2-vulnerabilty fix for the package

[vasireddy99]

Agent Environment

Describe what happened:

go-tuf has done a patch Release v0.3.2 regarding a potential vulnerability and is encouraged to use that instead of v0.3.0

Describe what you expected:

Use go-tuf version >=v0.3.2

Steps to reproduce the issue:

Additional environment details (Operating System, Cloud provider, etc):

[arbll]

Hey @vasireddy99, the vulnerability was reported by our very own @cedricvanrompay-datadog at theupdateframework/go-tuf#369 and we confirmed we were not impacted.

We're also not immediately upgrading because we had to fork go-tuf until theupdateframework/go-tuf#384 is merged. Once that's done we'll move to the v0.3.x backport of it.

I'll leave this open until we upgrade. Thanks for the report!