Upgrade chrono and replace deprecated methods usage

crates/tasks/src/email.rs

@@ -69,7 +69,13 @@ async fn verify_email(
     // Save the verification code in the database
     let verification = repo
         .user_email()
-        .add_verification_code(&mut rng, &clock, &user_email, Duration::hours(8), code)
+        .add_verification_code(
+            &mut rng,
+            &clock,
+            &user_email,
+            Duration::try_hours(8).unwrap(),
+            code,
+        )
         .await?;
 
     // And send the verification email

crates/tasks/src/storage/postgres.rs

@@ -337,7 +337,7 @@ where
             .as_secs()
             .try_into()
             .map_err(|e| StorageError::Database(Box::new(e)))?;
-        let wait = chrono::Duration::seconds(wait);
+        let wait = chrono::Duration::microseconds(wait * 1000 * 1000);
         // TODO: should we use a clock here?
         #[allow(clippy::disallowed_methods)]
         let run_at = Utc::now().add(wait);