build: Produce a linux/s390x binary

[radeksimko]

Closes #36651

Notes

• As per convention we are waiting until the first builds of providers are available though we anticipate these would primarily be a combination of "utility providers" and zLinux specific ones
• Both APT and RHEL linux packages will get published automatically for s390x
  • that's in addition to our currently published 4 architectures (aarch64, armv7hl, i386 and x86_64)
• A new Docker image will be published for s390x as per updated workflow
  • that's in addition to our currently published 4 architectures (386, amd64, arm and arm64)
• We do not run E2E tests for this OS/arch combination for now and only ensure the the compilation was successful

Target Release

1.16.x

Rollback Plan

• If a change needs to be reverted, we will roll out an update to the code within 7 days.

Changes to Security Controls

Are there any changes to security controls (access controls, encryption, logging) in this pull request? If so, explain.

CHANGELOG entry

• This change is user-facing and I added a changelog entry.
• This change is not user-facing.