remove upgrade for version below 5.0.0

[jiuker]

remove upgrade for version below 5.0.0
fix #2397

[cniackz]

Correct, no automatic upgrade if you are coming from version 4. If in version 4, then update manually

[ramondeklein]

@cniackz Please verify if a PR passes the checks before approving it.

@jiuker I have upgraded to GitHub workflows to use Go v1.23 to ensure it is able to use the upgraded packages.

[feorlen]

What, specifically, does "update manually" mean? Migration?

[ramondeklein]

When you want to upgrade from a pre-v5 operator, then you need to upgrade to Operator v5 and then upgrade to a newer version. We don't support upgrading directly from operator v4 to v7. If you have a better description, then please suggest it.

[feorlen]

When you want to upgrade from a pre-v5 operator, then you need to upgrade to Operator v5 and then upgrade to a newer version. We don't support upgrading directly from operator v4 to v7. If you have a better description, then please suggest it.

Ah ok. It's like the current situation, where you have to upgrade in steps. But you can upgrade in place. 👍🏻

The relevant docs are here:

https://min.io/docs/minio/kubernetes/upstream/operations/install-deploy-manage/upgrade-minio-operator-4.5.7-earlier.html#upgrade-legacy-minio-operators

This page has details of how to progressively upgrade from very old versions. The text will need some minor adjustments to make sure the before/after versions are correct for each step in the sequence.