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- ~~[OWNERS](https://github.com/pingcap/docs-tidb-operator/blob/release-1.4/OWNERS)~~ [Oreoxmt]
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This is an automated cherry-pick of #2442
First-time contributors' checklist
What is changed, added, or deleted? (Required)
bump some old Grafana version to 7.5.11, also ref https://github.com/pingcap/tidb-operator/pull/5203
Which TiDB Operator version(s) do your changes apply to? (Required)
What is the related PR or file link(s)?