Merge Vault and Bao injector tests into one job once OpenBao is stable

Preflight Checklist

[X] I have checked the issue tracker and found no issue that matches the one I want to submit.
[X] I agree to follow the Code of Conduct.

Problem Description

Currently the CI workflow consists of separate jobs for Vault and Bao injectors because Bao injector still has underlying dependencies tied to VAULT env-vars. Once those are handled, we should be able to run the tests together.

Proposed Solution

Run the tests together once OpenBao is stable, and free of Vault env-var dependencies.

Alternatives Considered

No response

Additional Information