Add explicit list of users to grant GCP project permissions

[xunholy]

Signed-off-by: Michael Fornaro 20387402+xUnholy@users.noreply.github.com

Description

Add TF to grant users the ability to encrypt/decrypt secrets within the project.

Checklist

• All commits are signed off. See the section Developer’s Certificate of Origin
• Provide a title or release-note blurb suitable for the release notes.
• All pre-commit hook validation passed successfully.
• All commits contain a well-written commit description including a title, description, and a Fixes: #XXX line if the commit addresses a particular GitHub issue.
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Issue Ref (Optional)

Which issue(s) this PR fixes (optional, using fixes #(, fixes #<issue_number>, ...) format, will close the issue(s) when the PR gets merged): Fixes #

Notes

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