Don't use $BUILDPLATFORM image for goreleaser

[StopMotionCuber]

Description of the change: Removes the --platform=$BUILDPLATFORM argument

Motivation for the change: When specifying the platform as $BUILDPLATFORM, amd64 binaries are taken. This leads to the image not being multi-arch, but still having an amd64 busybox binary.
The util init container of jobs are failing with an exec /bin/cp: exec format error.

Architectural changes: None

Testing remarks:

Reviewer Checklist

• Implementation matches the proposed design, or proposal is updated to match implementation
• Sufficient unit test coverage
• Sufficient end-to-end test coverage
• Bug fixes are accompanied by regression test(s)
• e2e tests and flake fixes are accompanied evidence of flake testing, e.g. executing the test 100(0) times
• tech debt/todo is accompanied by issue link(s) in comments in the surrounding code
• Tests are comprehensible, e.g. Ginkgo DSL is being used appropriately
• Docs updated or added to /doc
• Commit messages sensible and descriptive
• Tests marked as [FLAKE] are truly flaky and have an issue
• Code is properly formatted

Further remarks: I already opened #2890 to increase multi-arch/arm64 compatibility. In case wanted, I can also incorporate this change into that PR

[openshift-ci]

Hi @StopMotionCuber. Thanks for your PR.

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[risaraf]

Any ETA on this? This is blocking us from using OLM on ARM.

[vihangm]

Can you please review and merge this? olm doesn't work on an arm cluster without this change.

[dmesser]

/ok-to-test

[StopMotionCuber]

Have rebased the branch and added a sign-off to make it compliant with the DCO policy in the repo, would like to see it get merged

[awgreene]

/approve

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: awgreene, dmesser, StopMotionCuber

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[aimichelle]

Thanks for pulling this in! @dmesser , do you know when this might be released? We're excited to start running OLM in ARM. :)

[risaraf]

Can we get a minor version release with this fix?

[awgreene]

Released v0.24.0, which contains this commit.