Encrypt runners tokens

What does this MR do?

This merge request adds encryption support for some tokens related to CI/CD runners.

What are the relevant issue numbers?

Closes #52931
Closes #51232

Does this MR meet the acceptance criteria?

• Changelog entry added, if necessary
• Tests added for this feature/bug
• Conforms to the code review guidelines
• Conforms to the merge request performance guidelines
• Conforms to the database guides