Update npm packages

[tk0miya]

Feature or Bugfix

• Security fix

Purpose

• Got security alerts from GitHub (about lodash) https://github.com/sphinx-doc/sphinx/network/alerts
• This updates npm packages for testing.
• This does not harm Sphinx-core itself.
• Will be merged into master.

[codecov]

Codecov Report

Merging #6577 into 2.0 will decrease coverage by 0.02%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##              2.0    #6577      +/-   ##
==========================================
- Coverage   83.78%   83.76%   -0.03%     
==========================================
  Files         266      268       +2     
  Lines       40829    40863      +34     
  Branches     5983     5986       +3     
==========================================
+ Hits        34210    34227      +17     
- Misses       5296     5310      +14     
- Partials     1323     1326       +3

Impacted Files	Coverage Δ
sphinx/__init__.py	73.91% <0%> (ø)
sphinx/make_mode.py	0% <0%> (ø)

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[TimKam]

@tk0miya LGTM; just noticed that the PR is targeted at 2.0 but the text says it will go into master. Hence, I do not merge myself.

[tk0miya]

Thank you for comment :-)

just noticed that the PR is targeted at 2.0 but the text says it will go into master. Hence, I do not merge myself.

Ah, sorry. I meant this will be merged into 2.0, but it will be also merged into master branch manually.