Bump vue-router from 4.1.6 to 4.2.0 in /webapp

Bumps vue-router from 4.1.6 to 4.2.0.

Release notes

Sourced from vue-router's releases.

v4.2.0

Please refer to CHANGELOG.md for details.

Commits

• 038dbd4 release: vue-router@4.2.0
• f828a14 docs: allow global injections
• 0d0c915 style: lint
• d60dd27 chore: add notes
• 909c45b feat: allow inject within global navigation guards
• ce2a7b9 chore: up deps
• 6cc5b00 found a translation mistake @​navigation-guards.md (#1800)
• 4ca3c8c dosc(zh): translate api/router (#1822)
• c49541a docs(zh): add a translation guide (#1823)
• 7442d7f docs(zh): update the translation of active and exact active
• Additional commits viewable in compare view

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