fix execSync in dev-apps.js

[mdqst]

Description of the Changes

Mixing Async/Await with Synchronous Code

The function sequentialExecution is defined as an async function, but it uses execSync, which is synchronous. This creates confusion about how the flow of control works within the function. An async function is typically used when you want to perform asynchronous operations with await.

Replaced execSync with a non-blocking alternative.

Solves #INSERT_MONDAY_ID_HERE

---

Checklist

• Manually tests of the main Application flows are done and passed.
• New unit / functional tests have been added (whenever applicable).
• Docs have been updated (whenever relevant).
• PR title is follow the Conventional Commits convention: <type>[optional scope]: <description>, e.g: fix: prevent racing of requests

---

This change is