Adds Devtron to adopters

[abhibhaw]

Contributor Covenant Adoption

Project name

Devtron

Project repository

https://github.com/devtron-labs/devtron

Link to code of conduct in your project's repo or documentation

Code of conduct

Check your work!

• [x] Please double-check that you inserted the contact method for reporting incidents in the template. (Search the document for [INSERT CONTACT METHOD]) -

Thank you!