API Key visible in dev tools

[kevindoveton]

I couldn't find any previous issues/prs referencing this and it wasn't mentioned in the release notes of the release 5 days ago. Apologies if it's already been fixed.

Plugin Version: unsure
Bamboo: 7.1

Repro:

1. Add a "Push package" step to the template and fill in the required details.
2. Save the step.
3. Exit the page.
4. Reopen the page and navigate to the step you created.
5. View the API key in developer tools.

Expected behaviour: the API key is masked to prevent users stealing API keys