bouzuya/serde-firestore-value 。 #[serde(tag = "...")] が動作するよう修正 #[serde(with = "option_string_as_timestamp")] の追加 #[serde(with = "chrono_date_time_as_timestamp")] の追加 (chrono feature) #[serde(with = "time_offset_date_time_a…