chore: bump angular from 12.0 to 12.1

[hsuanxyz]

PR Checklist

Please check if your PR fulfills the following requirements:

• The commit message follows our guidelines: https://github.com/NG-ZORRO/ng-zorro-antd/blob/master/CONTRIBUTING.md#commit
• Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)

PR Type

What kind of change does this PR introduce?

[ ] Bugfix
[ ] Feature
[ ] Code style update (formatting, local variables)
[ ] Refactoring (no functional changes, no api changes)
[ ] Build related changes
[ ] CI related changes
[ ] Documentation content changes
[ ] Application (the showcase website) / infrastructure changes
[ ] Other... Please describe:

What is the current behavior?

Issue Number: N/A

What is the new behavior?

Does this PR introduce a breaking change?

[ ] Yes
[ ] No

Other information

[codecov]

Codecov Report

Merging #6804 (a8369de) into master (7163e36) will increase coverage by 0.01%.
The diff coverage is n/a.

❗ Current head a8369de differs from pull request most recent head 11a7b1a. Consider uploading reports for the commit 11a7b1a to get more accurate results

@@            Coverage Diff             @@
##           master    #6804      +/-   ##
==========================================
+ Coverage   89.56%   89.58%   +0.01%     
==========================================
  Files         488      488              
  Lines       15779    15779              
  Branches     2423     2423              
==========================================
+ Hits        14133    14135       +2     
+ Misses       1005     1004       -1     
+ Partials      641      640       -1     

Impacted Files	Coverage Δ
components/page-header/demo/responsive.ts	100.00% <ø> (ø)
components/core/util/text-measure.ts	91.30% <0.00%> (+1.73%)	⬆️

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