feat: remove unused owo_colors dependency from submission and scrobbler modules

crates/scrobbler/src/handlers/v1/submission.rs

···
 use actix_web::HttpResponse;
 use anyhow::Error;
-use owo_colors::OwoColorize;
 use serde_json::json;
 use std::{collections::BTreeMap, sync::Arc};
 

crates/scrobbler/src/scrobbler.rs

···
 use std::{collections::BTreeMap, env};
 
 use anyhow::Error;
-use owo_colors::OwoColorize;
 use rand::Rng;
 use sqlx::{Pool, Postgres};