Update dependency webpack-dev-server to v4 - abandoned

[mend-for-github-com[bot]]

This PR contains the following updates:

Package	Type	Update	Change
webpack-dev-server	devDependencies	major	^3.1.11 -> ^4.0.0

By merging this PR, the below issues will be automatically resolved and closed:

Severity	CVSS Score	CVE	GitHub Issue
High	9.8	CVE-2019-10747	#10
High	9.8	CVE-2019-10747	#10
High	9.8	CVE-2021-23440	#81
High	9.8	CVE-2021-23440	#81
High	9.8	CVE-2022-0691	#62
High	9.3	CVE-2022-1650	#78
High	9.1	CVE-2022-0686	#66
High	7.5	CVE-2019-20149	#4
High	7.5	CVE-2020-28469	#36
High	7.5	CVE-2021-23424	#103
High	7.5	CVE-2022-24771	#65
High	7.5	CVE-2022-24772	#64
High	7.5	CVE-2022-38900	#98
High	7.3	CVE-2020-7720	#25
Medium	6.6	WS-2022-0008	#33
Medium	6.5	CVE-2021-23386	#102
Medium	6.5	CVE-2022-0155	#35
Medium	6.1	CVE-2022-0122	#34
Medium	5.9	CVE-2022-0536	#49
Medium	5.3	CVE-2020-7608	#21
Medium	5.3	CVE-2020-7693	#2
Medium	5.3	CVE-2021-27515	#52
Medium	5.3	CVE-2021-3664	#51
Medium	5.3	CVE-2022-0512	#50
Medium	5.3	CVE-2022-0639	#67
Medium	5.3	CVE-2022-24773	#63

---

• [ ] If you want to rebase/retry this PR, click this checkbox. ⚠ Warning: custom changes will be lost.

[mend-for-github-com[bot]]

Edited/Blocked Notification

Renovate will not automatically rebase this PR, because it does not recognize the last commit author and assumes somebody else may have edited the PR.

You can manually request rebase by checking the rebase/retry box above.

⚠️ Warning: custom changes will be lost.

[mend-for-github-com[bot]]

Autoclosing Skipped

This PR has been flagged for autoclosing. However, it is being skipped due to the branch being already modified. Please close/delete it manually or report a bug if you think this is in error.