dumpling: update the gc info

[qiancai]

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• master (the latest development version)
• v8.3 (TiDB 8.3 versions)
• v8.2 (TiDB 8.2 versions)
• v8.1 (TiDB 8.1 versions)
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What is the related PR or file link(s)?

• This PR is translated from: dumpling: update the gc info docs-cn#18215
• Other reference link(s):

Do your changes match any of the following descriptions?

• Delete files
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• Need modification after applied to another branch
• Might cause conflicts after applied to another branch

[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-08-01 03:23:04.73990253 +0000 UTC m=+412501.019950597: ☑️ agreed by hfxsd.

[qiancai]

/approve

[ti-chi-bot]

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[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-6.1: #18434.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-6.5: #18435.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-7.1: #18436.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-7.5: #18437.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-8.0: #18438.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-8.1: #18439.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-8.2: #18440.