Prepare for upgrade to fabric8 5.10

Note that this waits on https://github.com/fabric8io/kubernetes-client/pull/3562 at least to be able to solve the testing issue we've encountered since 5.9.0.

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https://github.com/java-operator-sdk/java-operator-sdk/pull/656

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$upstream:656$