fix(deps): update react-router to 8.3.0

[aidandaly24]

Description

Updates React Router from 8.2.0 to 8.3.0 and raises the manifest minimum to ^8.3.0.

This resolves GHSA-qwww-vcr4-c8h2, which currently causes bun audit to fail on the refactor branch and its dependent pull requests.

Related Issue

N/A - this is a targeted dependency remediation for an existing CI failure.

Documentation PR

N/A

Type of Change

• Bug fix
• New feature
• Breaking change
• Documentation update
• Other (please describe): Security dependency update

Testing

How have you tested the change?

• I ran bun audit (no vulnerabilities found)
• I ran bun test (331 passed, 0 failed)
• I ran bun run typecheck
• I ran bun run lint:check
• I ran bun run format:check
• I ran bun run build
• src/assets/ was not modified, so snapshots do not require updates

Checklist

• I have read the CONTRIBUTING document
• No additional tests are required for this lockfile-only package upgrade
• No documentation changes are required
• My changes generate no new warnings
• No dependent package changes are required

---

By submitting this pull request, I confirm that you can use, modify, copy, and redistribute this contribution, under the
terms of your choice.

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 94.85%. Comparing base (1763609) to head (bc60710).

Additional details and impacted files

@@            Coverage Diff            @@
##           refactor    #1833   +/-   ##
=========================================
  Coverage     94.85%   94.85%           
=========================================
  Files           149      149           
  Lines          7360     7360           
=========================================
  Hits           6981     6981           
  Misses          379      379           

☔ View full report in Codecov by Harness.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.