Update dependency vue-router to v4.0.15

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
vue-router	4.0.14 -> 4.0.15

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Release Notes

vuejs/router

### [`v4.0.15`](https://togithub.com/vuejs/router/blob/HEAD/CHANGELOG.md#​4015-httpsgithubcomvuejsroutercomparev4014v4015-2022-05-04) [Compare Source](https://togithub.com/vuejs/router/compare/v4.0.14...v4.0.15) ##### Bug Fixes - **matcher:** keep trailing slash on empty optional params ([2f1e9b9](https://togithub.com/vuejs/router/commit/2f1e9b976d7c5c1ada38c57f276304688d31b7e4)), closes [#​1357](https://togithub.com/vuejs/router/issues/1357) - setup history listeners once ([faa8562](https://togithub.com/vuejs/router/commit/faa85624d37367c638fb9272a4130d8524143120)), closes [#​1344](https://togithub.com/vuejs/router/issues/1344) - **view:** handle [@​vue/compat](https://togithub.com/vue/compat) automatically ([92becf6](https://togithub.com/vuejs/router/commit/92becf6dc6c4ef21985abb52887b4cec626f5c82)), closes [#​1315](https://togithub.com/vuejs/router/issues/1315)

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