Upgrade website ESLint to v10 when eslint-config-next supports it

[irparent]

Context

PR #52 was closed because eslint-config-next@16.2.1 bundles plugins that cap their ESLint peer dep at ^9:

• eslint-plugin-react@7.37.5 → "eslint": "^3 || ^4 || ^5 || ^6 || ^7 || ^8 || ^9.7"
• eslint-plugin-import@2.32.0 → "eslint": "^2 || ^3 || ^4 || ^5 || ^6 || ^7.2.0 || ^8 || ^9"
• eslint-plugin-jsx-a11y@6.10.2 → "eslint": "^3 || ^4 || ^5 || ^6 || ^7 || ^8 || ^9"

Root package ESLint was upgraded to 10 in PR #45 (TS-ESLint plugins explicitly support ^10). Website stays pinned at 9 until the Next.js ecosystem catches up.

Unblock condition

One of:

• eslint-config-next ships with ESLint 10-compatible plugin versions
• eslint-plugin-react releases a version declaring ^10 in peer deps
• Next.js 17 ships with updated lint config

Current state

• Root: ESLint 10
• Website: ESLint 9 (pinned)
• Dependabot: ESLint 10 ignored for /website via dependabot.yml

References

• PR deps(website): bump eslint from 9.39.4 to 10.1.0 in /website #52 (closed): deps(website): bump eslint from 9.39.4 to 10.1.0 in /website #52
• PR deps: bump eslint from 9.39.4 to 10.1.0 in the linting group #45 (root ESLint 10, merged): deps: bump eslint from 9.39.4 to 10.1.0 in the linting group #45