docs: update maintainers status

[Feggah]

Description of your changes

In order to send the correct signal to the community about the maintainers of this provider, I updated the OWNERS.md file.

I have shifted my career and attention to other projects and technologies, giving me little bandwidth to continue contributing to the project. With that being said, I think it makes sense to remove my Maintainer status to best reflect my absence of contributions in the Crossplane ecosystem.

I also have updated @hasheddan maintainer status to Emeritus Maintainer. I guess it makes sense to follow the same status as in the Crossplane core repository.

If you still want to be in the Maintainer section, let me know and I will revert it @hasheddan.

I have:

• [x] Read and followed Crossplane's contribution process.
• [x] Run make reviewable test to ensure this PR is ready for review.

How has this code been tested

N/A