Update redis:3.2.12 Docker digest to 5c768f (#1096)
Update redis:3.2.12 Docker digest to 5c768f (#1096)

<p>This Pull Request updates Docker base image <code>redis:3.2.12</code> to the latest digest (<code>sha256:5c768fac76b36f71aecc38e83fcf8ab5188dfb9789ea5ac7be9769ea44732f69</code>). For details on Renovate's Docker support, please visit <a href="https://renovatebot.com/docs/docker">https://renovatebot.com/docs/docker</a></p>
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<p>This PR has been generated by <a href="https://renovatebot.com">Renovate Bot</a>.</p>
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