chore: timeout test cafe jobs

[pauldambra]

https://github.com/PostHog/posthog-js/pull/1525 has a problem where the IE 11 tests are freezing

it will run for many hours

that's silly

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Name	Status	Preview	Updated (UTC)
posthog-js	✅ Ready (Inspect)	Visit Preview	Nov 19, 2024 11:47am

[github-actions[bot]]

Size Change: 0 B

Total Size: 3.11 MB

ℹ️ View Unchanged

| Filename | Size | | :--- | :---: | | `dist/all-external-dependencies.js` | 204 kB | | `dist/array.full.es5.js` | 253 kB | | `dist/array.full.js` | 356 kB | | `dist/array.full.no-external.js` | 355 kB | | `dist/array.js` | 170 kB | | `dist/array.no-external.js` | 169 kB | | `dist/dead-clicks-autocapture.js` | 13.6 kB | | `dist/exception-autocapture.js` | 8.7 kB | | `dist/external-scripts-loader.js` | 2.19 kB | | `dist/main.js` | 171 kB | | `dist/module.full.js` | 356 kB | | `dist/module.full.no-external.js` | 355 kB | | `dist/module.js` | 170 kB | | `dist/module.no-external.js` | 169 kB | | `dist/recorder-v2.js` | 113 kB | | `dist/recorder.js` | 113 kB | | `dist/surveys-preview.js` | 56.6 kB | | `dist/surveys.js` | 62.1 kB | | `dist/tracing-headers.js` | 1.33 kB | | `dist/web-vitals.js` | 10.3 kB |

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[pauldambra]

just going to merge this pre-review since it's so innocuous 🙈