chore: upgrade k-ap to 0.4.0

Map new fetched_at field in RemoteActor, read last_fetched_at from DB.

crates/adapters/activitypub/Cargo.toml

@@ -4,7 +4,7 @@ version = "0.1.0"
 edition = "2021"
 
 [dependencies]
-k-ap = { version = "0.3.1", registry = "gitea" }
+k-ap = { version = "0.4.0", registry = "gitea" }
 domain = { workspace = true }
 url = { workspace = true }
 serde = { workspace = true }

crates/adapters/activitypub/src/service.rs

@@ -124,7 +124,7 @@ fn k_ap_actor_to_domain(a: k_ap::RemoteActor) -> DomainRemoteActor {
         display_name: a.display_name,
         avatar_url: a.avatar_url,
         outbox_url: a.outbox_url,
-        last_fetched_at: chrono::Utc::now(),
+        last_fetched_at: a.fetched_at.unwrap_or_else(chrono::Utc::now),
         bio: a.bio,
         banner_url: a.banner_url,
         also_known_as: a.also_known_as,