Update dependency vue-router to v3.5.4 (develop)

This MR contains the following updates:

Package	Type	Update	Change
vue-router	dependencies	patch	3.5.3 -> 3.5.4

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Release Notes

vuejs/vue-router

v3.5.4

Compare Source

Bug Fixes

• remove whitespace between mulitple slashes (86d7f1f), closes #​3743

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