Update dependency vue-loader to v13.7.3

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

This PR contains the following updates:

Package	Type	Update	Change
vue-loader	devDependencies	patch	13.7.2 -> 13.7.3

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

Severity	CVSS Score	CVE	GitHub Issue
Critical	9.8	CVE-2021-44906	#68
High	8.1	WS-2019-0063	#24
High	7.5	WS-2019-0032	#17
Medium	5.6	CVE-2020-7598	#14

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Release Notes

vuejs/vue-loader (vue-loader)

### [`v13.7.3`](https://togithub.com/vuejs/vue-loader/compare/e4b2e4c1cc72cadc177dec608fdb198c4daeb170...8722cebeeb13c22f3c1c6d1f8a75c34b68486595) [Compare Source](https://togithub.com/vuejs/vue-loader/compare/e4b2e4c1cc72cadc177dec608fdb198c4daeb170...8722cebeeb13c22f3c1c6d1f8a75c34b68486595)

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