[Fix] Fix CI of publishing package

[zhouzaida]

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Motivation

Related Issue: #1219
Related Action: https://github.com/open-mmlab/mmcv/runs/3150536246?check_suite_focus=true#step:4:17

Fix CI of publishing package

Modification

• .github/workflows/build.yml
• .github/workflows/publish-to-pypi.yml

BC-breaking (Optional)

Does the modification introduce changes that break the backward-compatibility of the downstream repos?
If so, please describe how it breaks the compatibility and how the downstream projects should modify their code to keep compatibility with this PR.

Use cases (Optional)

If this PR introduces a new feature, it is better to list some use cases here, and update the documentation.

Checklist

1. Pre-commit or other linting tools are used to fix the potential lint issues.
2. The modification is covered by complete unit tests. If not, please add more unit test to ensure the correctness.
3. If the modification has potential influence on downstream projects, this PR should be tested with downstream projects, like MMDet or MMCls.
4. The documentation has been modified accordingly, like docstring or example tutorials.

[codecov]

Codecov Report

Merging #1220 (0d91f3c) into master (88d8c9e) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #1220   +/-   ##
=======================================
  Coverage   68.27%   68.27%           
=======================================
  Files         160      160           
  Lines       10599    10599           
  Branches     1937     1937           
=======================================
  Hits         7236     7236           
  Misses       2979     2979           
  Partials      384      384           

Flag	Coverage Δ
unittests	68.27% <ø> (ø)

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[ZwwWayne]

Do we also need to update our requirements?

[zhouzaida]

Do we also need to update our requirements?

In fact, the requirement has been updated before but it seemly didn't work because the error is raised before running python setup.py develop. Maybe this line can be removed.

mmcv/requirements/runtime.txt

Line 6 in 88d8c9e

setuptools>=52