Go's semantic import versioning requires v2+ modules to include the
major version in the module path. This enables using proper version
tags (v3.x.x) instead of pseudo-versions.
Updated module path: code.gitcaddy.com/server/v3
Since https://github.com/go-gitea/gitea/pull/25686, a few `interface{}`
have sneaked into the codebase. Add this replacement to `make fmt` to
prevent this from happening again.
Ideally a linter would do this, but I haven't found any suitable.
