Sealed Secret in Kubernetes Challenge

[Shubham-Patel07]

What kind of changes does this PR include?

• [ ] Fixes or refactors
• [x] A new challenge
• [ ] Additional documentation
• [ ] Something else

Relation

Fixes part of https://github.com/OWASP/wrongsecrets/issues/858

Description

Added new challenge Related to Bitnami Sealed Secrets

Checklist:

• [x] All the contributions made are solely the work of me and my co-authors
• [ ] I tested the changes in this PR (if applicable)
• [ ] I added unit tests to ensure my change works (when change in Java or on front-end code)
• [ ] I added UI tests to ensure my UI changes work (when change in the overall UI, not needed if just adding a challenge)
• [ ] The PR passes pre-commit hooks and automated tests