ci: updated webpack versions

[cap-Bernardito]

This PR contains a:

• bugfix
• new feature
• code refactor
• test update
• typo fix
• metadata update

Motivation / Use-Case

Updated webpack versions

Breaking Changes

No

Additional Info

No

[codecov]

Codecov Report

Merging #388 into master will increase coverage by 0.43%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #388      +/-   ##
==========================================
+ Coverage   96.98%   97.41%   +0.43%     
==========================================
  Files           8        4       -4     
  Lines         232      116     -116     
  Branches       50       25      -25     
==========================================
- Hits          225      113     -112     
+ Misses          7        3       -4     

Impacted Files	Coverage Δ
D:/a/less-loader/less-loader/src/index.js
D:/a/less-loader/less-loader/src/LessError.js
D:/a/less-loader/less-loader/src/utils.js
D:/a/less-loader/less-loader/src/cjs.js
src/utils.js	97.29% <0.00%> (+1.35%)	⬆️

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