Fix golang dep version mismatch

[xinydev]

At present, the version of golang dep being checked and installed in install_dep() are inconsistent. Unify them to the actual installed version, which is v0.5.4

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[k8s-ci-robot]

Hi @xinydev. Thanks for your PR.

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[k8s-ci-robot]

@xinydev: Cannot trigger testing until a trusted user reviews the PR and leaves an /ok-to-test message.

In response to [this](https://github.com/kubernetes-csi/csi-release-tools/pull/222#issuecomment-1488614957): >/ok-to-test Instructions for interacting with me using PR comments are available [here](https://git.k8s.io/community/contributors/guide/pull-requests.md). If you have questions or suggestions related to my behavior, please file an issue against the [kubernetes/test-infra](https://github.com/kubernetes/test-infra/issues/new?title=Prow%20issue:) repository.

[xinydev]

Ping @pohly , Would you pls take a look?

[pohly]

/lgtm /approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: pohly, xinydev

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Needs approval from an approver in each of these files: - ~~[OWNERS](https://github.com/kubernetes-csi/csi-release-tools/blob/master/OWNERS)~~ [pohly] Approvers can indicate their approval by writing `/approve` in a comment Approvers can cancel approval by writing `/approve cancel` in a comment