Hi again, @rudrapatel2712.
We recently deprecated the Engineering Blog. You can read more about this decision in this post: https://engineering.bitnami.com/articles/we-ve-moved-discover-the-new-bitnami-tutorials-site.html
As stated there, the engineering blog posts won't be updated anymore:
You can continue to access the engineering blog to check your favorite posts. Don't worry, this site won't disappear in the long term. Those articles won't be updated, though.
If you are interested in Sealed Secrets, you can check the latest news in the GitHub repository: https://github.com/bitnami-labs/sealed-secrets
In any case, thank you very much for using Bitnami and taking your time to report this.