message: fix(build): use RHEL for s390x/ppc64le mongocryptd
  We need to use the mongocryptd from RHEL for s390x/ppc64le
  because that is the only platform where these architectures
  are supported by the 5.x server.
diff: @@ -26,6 +26,14 @@ export async function downloadMongocrypt(variant: BuildVariant): Promise<string>
  // eslint-disable-next-line complexity
  function lookupReleaseDistro(variant: BuildVariant): string {
  + switch (getArch(variant)) {
  + case 'ppc64le':
  + return 'rhel81';
  + case 's390x':
  + return 'rhel72'; // TODO: switch to rhel80 once available
  + default:
  + break;
  + }
  switch (getDistro(variant)) {
  case 'win32':
  case 'win32msi':
  @@ -34,7 +42,7 @@ function lookupReleaseDistro(variant: BuildVariant): string {
  return 'darwin';
  case 'linux':
  case 'debian':
  - return 'ubuntu1804';
  + return 'debian92';
  case 'suse':
  return 'suse12';
  case 'amzn2':
  @@ -43,10 +51,6 @@ function lookupReleaseDistro(variant: BuildVariant): string {
  switch (getArch(variant)) {
  case 'x64':
  return 'rhel70';
  - case 'ppc64le':
  - return 'rhel81';
  - case 's390x':
  - return 'rhel72'; // TODO: switch to rhel80 once available
  case 'arm64':
  return 'rhel82';
  default:
  