Bump vue from 3.4.20 to 3.4.21 in /frontend

Bumps vue from 3.4.20 to 3.4.21.

Release notes

Sourced from vue's releases.

v3.4.21

Please refer to CHANGELOG.md for details.

Changelog

Sourced from vue's changelog.

3.4.21 (2024-02-28)

Bug Fixes

• runtime-dom: avoid unset option's value (#10416) (b3f8b5a), closes #10412 #10396
• suspense: ensure nested suspense patching if in fallback state (#10417) (7c97778), closes #10415
• warning: stringify args in warn handler (#10414) (bc37258), closes #10409

Commits

• f66a75e release: v3.4.21
• b3f8b5a fix(runtime-dom): avoid unset option's value (#10416)
• bc37258 fix(warning): stringify args in warn handler (#10414)
• 7c97778 fix(suspense): ensure nested suspense patching if in fallback state (#10417)
• 1f6a110 test: clean snapshot
• See full diff in compare view

---

Dependabot commands

You can trigger Dependabot actions by commenting on this MR

• $dependabot rebase will rebase this MR
• $dependabot recreate will recreate this MR rewriting all the manual changes and resolving conflicts