Change 'go 1.23.0' to 'go 1.23' in go.mod

[ahrtr]

cc @hakman @jmhbnz

[k8s-ci-robot]

@ahrtr: The following test failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
pull-etcd-operator-test-e2e	38cec61	link	false	/test pull-etcd-operator-test-e2e

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[soma00333]

We may need to add go mod tidy to the lint workflow.

etcd-operator/.github/workflows/lint.yml

Lines 24 to 26 in 7e8cf49

	- name: Run golangci-lint
	run: |
	make lint

cf. https://github.com/etcd-io/etcd-operator/actions/runs/12786609848/job/35644009662?pr=41

[jmhbnz]

LGTM - Thanks @ahrtr

[k8s-ci-robot]

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[ahrtr]

Since k8s.io./* modules already specify "go 1.23.0" in their go.mod files, so each time when we execute "go mod tidy", it will automatically change "go 1.23" to "go 1.23.0". technically It isn't a problem to specify "go 1.23.0", so closing this PR...

FYI. https://groups.google.com/g/golang-nuts/c/6JcXf_KZBR0