golangci-lint: use gomodguard/depguard

People shouldn't import uncommon, experimental, or outdated lib.

_Originally posted by @ccoVeille in https://github.com/gofr-dev/gofr/pull/1867#discussion_r2156238245_

If we do so, it should be documented with a //nolint

This would prevent people to bring new dependencies

Start by locating the repository's golangci-lint configuration and review the linked discussion in pull request 1867. Configure gomodguard or depguard to restrict uncommon, experimental, or outdated imports; done means new dependencies are prevented unless an import is explicitly documented with //nolint.

Written by the indexing model from the issue text.