[Bug]: S3_ENDPOINT_URL, S3_BUCKET_NAME, et. al. should not be secrets

[Sharpie]

Is this a critical security issue?

• This is not a security issue.

Describe the Bug

GitHub locks down what can be done with secret values by disallowing them to be used for things like conditional checks.

Having these items configured as secrets leads to some fumbling, e.g. #120 and eventually #121.

Expected Behavior

Many of the secrets referenced in the GitHub Workflows are not actually secret and should be Variables instead.

Steps to Reproduce

N/A

Environment

N/A

Additional Context

No response

Relevant log output