Replace interface{} with any (#25686)

Result of running `perl -p -i -e 's#interface\{\}#any#g' **/*` and `make fmt`.

Basically the same [as golang did](2580d0e08d).

routers/api/packages/rpm/rpm.go

@@ -25,7 +25,7 @@ import (
 	rpm_service "code.gitea.io/gitea/services/packages/rpm"
 )
 
-func apiError(ctx *context.Context, status int, obj interface{}) {
+func apiError(ctx *context.Context, status int, obj any) {
 	helper.LogAndProcessError(ctx, status, obj, func(message string) {
 		ctx.PlainText(status, message)
 	})