Migrate @fortawesome/* to v7

[arkid15r]

Is your feature request related to a problem? Please describe.

The dependabot version bump PRs failed:

• https://github.com/OWASP/Nest/actions/runs/17473898767/job/49628947331?pr=2204
• https://github.com/OWASP/Nest/actions/runs/17473898683/job/49628951388?pr=2202

Describe the solution you'd like

Migrate all related packages, update incompatible code, fix tests.

Are you going to work on implementing this?

• Yes
• No

[dharapandya85]

Issue available ? Please assign me this issue.