Merge pull request #5 from OJFord/dependabot/github_actions/gorelease…

Fix error tfplugindocs err `invalid character 'c'`

cf. hashicorp/terraform-plugin-docs#127

Update import-gpg action, roll key

Add `mullvad_account` data & resource

Make mullvad_{wireguard_port -> port_forward} more generic

Add `mullvad_city` data source

Fix for auth & structural changes in Mullvad API

Incidentally fixes #1 (API now does return the created port).

Add `mullvad_relay` data source

docs: Generate with tfplugindocs

Release from GitHub action