gofmt: restore import grouping after the module rename

The rename to git.ryuvia.com/niklas/... was a plain string substitution, so it
left the import blocks in their old order. The new path sorts before
github.com/go-chi/..., where the old one sorted after, which gofmt considers
unformatted.

go vet does not look at import order, so CI had nothing to say about it.

internal/api/users.go

@@ -11,8 +11,8 @@ import (
 	"strings"
 	"time"
 
-	"github.com/go-chi/chi/v5"
 	"git.ryuvia.com/niklas/terdut-server/internal/models"
+	"github.com/go-chi/chi/v5"
 )
 
 func handleBootstrap(db *sql.DB) http.HandlerFunc {