release notes 7.1.6 (#19413)

[ti-chi-bot]

This is an automated cherry-pick of #19413

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What is changed, added or deleted? (Required)

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For details, see tips for choosing the affected versions.

• [x] master (the latest development version)
• [x] v8.5 (TiDB 8.5 versions)
• [x] v8.4 (TiDB 8.4 versions)
• [x] v8.3 (TiDB 8.3 versions)
• [x] v8.2 (TiDB 8.2 versions)
• [x] v8.1 (TiDB 8.1 versions)
• [x] v7.5 (TiDB 7.5 versions)
• [x] v7.1 (TiDB 7.1 versions)
• [ ] v6.5 (TiDB 6.5 versions)
• [ ] v6.1 (TiDB 6.1 versions)
• [ ] v5.4 (TiDB 5.4 versions)
• [ ] v5.3 (TiDB 5.3 versions)

What is the related PR or file link(s)?

• This PR is translated from:https://github.com/pingcap/docs-cn/pull/19056
• Other reference link(s):

Do your changes match any of the following descriptions?

• [ ] Delete files
• [ ] Change aliases
• [ ] Need modification after applied to another branch
• [ ] Might cause conflicts after applied to another branch

[hfxsd]

/approve

[ti-chi-bot[bot]]

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