Dont error if secret visible key does not exist

[anthonywoo]

Note: Samson is a public repo, do not include Zendesk-internal information, urls, etc.

Secrets can be created outside of Samson, and then managed through Samson. If a secret was created outside of Samson, it is possible for the secret not to have the visible key and users won't be able to access that secret in Samson

References

• Jira link:

Risks

• Low. There may be other issues with secrets created outside of Samson

[grosser]

best also add a test that fails without this fix

[anthonywoo]

@grosser added a test. bundle_audit is failing, but that should be addressed in this PR

unless there are other concerns, my plan is to merge and deploy this tomorrow morning