[ROCm] update GPG key URL in circleci Dockerfile (#46256)
Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/46256
Reviewed By: mrshenli
Differential Revision: D24308563
Pulled By: heitorschueroff
fbshipit-source-id: 33ef6e5490bdd59e14db4851c03f6df6ce227358
