Bad news: the hot patch we were using breaks in Go 1.19.4: 6109c07ec4
Good news: we can now patch with an environment variable at runtime.
Co-authored-by: Christopher Swenson <christopher.swenson@hashicorp.com>
Remove SHA1 for certs in prep for Go 1.18
* Remove certs with SHA1 from tests
* Use default SHA-256 with PKCS7 in AWS
* Update SHA1 deprecation note
Co-authored-by: Theron Voran <tvoran@users.noreply.github.com>