Generate checksums for nightly binaries

[rm3l]

What type of PR is this: /area release-eng

What does this PR do / why we need it:

Which issue(s) this PR fixes: Fixes #7148

PR acceptance criteria:

• [ ] Unit test

• [ ] Integration test

• [x] Documentation

How to test changes / Special notes to the reviewer:

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[openshift-ci[bot]]

Skipping CI for Draft Pull Request. If you want CI signal for your change, please convert it to an actual PR. You can still manually trigger a test run with /test all

[sonarcloud[bot]]

Kudos, SonarCloud Quality Gate passed!   

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[odo-robot[bot]]

Kubernetes Docs Tests on commit 6e7bc8a79558d0107cc6fa46d71ac5a10def34c1 finished with errors. View logs: TXT HTML

[rm3l]

/override Kubernetes-Integration-Tests/Kubernetes-Docs-Integration-Tests

Unrelated - failure reported in https://github.com/redhat-developer/odo/issues/7152

[openshift-ci[bot]]

@rm3l: Overrode contexts on behalf of rm3l: Kubernetes-Integration-Tests/Kubernetes-Docs-Integration-Tests

In response to [this](https://github.com/redhat-developer/odo/pull/7149#issuecomment-1818427440): >/override Kubernetes-Integration-Tests/Kubernetes-Docs-Integration-Tests > >Unrelated - failure reported in https://github.com/redhat-developer/odo/issues/7152 Instructions for interacting with me using PR comments are available [here](https://git.k8s.io/community/contributors/guide/pull-requests.md). If you have questions or suggestions related to my behavior, please file an issue against the [kubernetes/test-infra](https://github.com/kubernetes/test-infra/issues/new?title=Prow%20issue:) repository.

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