Small fix in Squid delete action

Signed-off-by: aticig <gulsum.atici@canonical.com>

squid_metrics_cnf/juju-bundles/charms/squid-operator/src/lib/squid/cluster.py

@@ -42,7 +42,7 @@ class SquidCluster(ops.framework.Object):
     def delete_url(self, url: str):
         if self.framework.model.unit.is_leader():
             allowed_urls = self.allowed_urls
-            self.framework.model.unit.status = ops.model.ActiveStatus(self.allowed_urls)
+            self.framework.model.unit.status = ops.model.ActiveStatus(repr(self.allowed_urls))
             if url in allowed_urls:
                 allowed_urls.remove(url)
                 self.update_allowed_urls(allowed_urls)