Fix decryption failure
Fix decryption failure

The default digest changed[0] in the version of openssl used in our CircleCI 2.0 build compared to the openssl version used in the CircleCI 1.0 build and when the file was encrypted originally. Making the choice of digest explicit protects us against this brittleness.

[0] https://stackoverflow.com/questions/39637388/encryption-decryption-doesnt-work-well-between-two-different-openssl-versions/39641378#39641378

micrometer-metrics/micrometer,micrometer-metrics/micrometer,micrometer-metrics/micrometer