Pin older pyOpenSSL for s390x & ppc

daniel.moody@mongodb.com found that the cryptography package is pinned to an older version for s390x & ppc here: https://github.com/10gen/mongo/blob/3e5eb8d128d8ab72c4f25e0392af333384bf6db5/etc/pip/components/platform.req#L5-L6

Because of that, the recent pyOpenSSL upgrade in SERVER-69628 is causing system failures on s390x and ppc: https://evergreen.mongodb.com/task/mongodb_mongo_master_nightly_enterprise_rhel_83_s390x_compile_dist_test_61ab44c46f6474094648219537c07378f724b578_22_10_12_23_05_26

We should similarly pin pyOpenSSL to the older version for these machines. This is okay because pyOpenSSL only needed to be upgraded for the sake of metrics collection & there is no metrics collection for those machines.