chore: use errors.New to replace fmt.Errorf with no parameters will much better

[ChengenH]

use errors.New to replace fmt.Errorf with no parameters will much better

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Hi @ChengenH. Thanks for your PR.

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[cert-manager-prow]

Thanks for your pull request. Before we can look at it, you'll need to add a 'DCO signoff' to your commits.

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The list of commits missing DCO signoff:

• ab865c2 Merge pull request Build ThirdPartyResource API group #1 from ChengenH/self-upgrade-master

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