chore(dashboard): update TiDB Dashboard to v8.0.0-9768844f [master]

[baurine]

What problem does this PR solve?

Issue Number: Close #7989 ref #4257

Update TiDB Dashboard to v8.0.0-9768844f.

This PR fixes the error that hosts/disks/statistics page can't show normally when use pd micro-service mode.

TiDB Dashboard side PR: pingcap/tidb-dashboard#1664

Release note

None

Test

$ make pd-server
$ cp bin/pd-server ~/.tiup/components/pd/v8.0.0-alpha-nightly/pd-server
# pd ms mode
$ tiup playground nightly --pd.mode ms --pd.api 1 --pd.scheduling 1 --pd.tso 1 --pd.rm 0 --kv 3 --tiflash 0 --db 1
# pd non-ms mode
$ tiup playground nightly --tiflash 0

[ti-chi-bot]

[REVIEW NOTIFICATION]

This pull request has been approved by:

• HuSharp
• lhy1024

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[ti-chi-bot]

Hi @baurine. Thanks for your PR.

I'm waiting for a tikv member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

Once the patch is verified, the new status will be reflected by the ok-to-test label.

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[codecov]

Codecov Report

Merging #7985 (95e8e6a) into master (423e36c) will decrease coverage by 0.12%.
Report is 1 commits behind head on master.
The diff coverage is n/a.

❗ Current head 95e8e6a differs from pull request most recent head 1abc10c. Consider uploading reports for the commit 1abc10c to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #7985      +/-   ##
==========================================
- Coverage   73.68%   73.56%   -0.12%     
==========================================
  Files         436      436              
  Lines       48464    48464              
==========================================
- Hits        35709    35651      -58     
- Misses       9710     9749      +39     
- Partials     3045     3064      +19     

Flag	Coverage Δ
unittests	73.56% <ø> (-0.12%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

[HuSharp]

/ok-to-test

[HuSharp]

/merge

[ti-chi-bot]

@HuSharp: It seems you want to merge this PR, I will help you trigger all the tests:

/run-all-tests

You only need to trigger /merge once, and if the CI test fails, you just re-trigger the test that failed and the bot will merge the PR for you after the CI passes.

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[ti-chi-bot]

This pull request has been accepted and is ready to merge.

Commit hash: 95e8e6a

[ti-chi-bot]

@baurine: Your PR was out of date, I have automatically updated it for you.

If the CI test fails, you just re-trigger the test that failed and the bot will merge the PR for you after the CI passes.

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the ti-community-infra/tichi repository.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-8.0: #7990.