Use OpenSSL to generate SHA1
Why is this change being made?
To make sure we are using compliant OpenSSL (according to https://internal-handbook.gitlab.io/engineering/fips-compliance/#ruby) we need to move from Digest to OpenSSL::Digest.
To make sure we are using compliant OpenSSL (according to https://internal-handbook.gitlab.io/engineering/fips-compliance/#ruby) we need to move from Digest to OpenSSL::Digest.