Kill hanging process after integration tests complete

[GregBrimble]

Fixes #397 and #618

[changeset-bot]

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Latest commit: 4b9c3aa

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[github-actions]

A wrangler prerelease is available for testing. You can install this latest build in your project with:

npm install --save-dev https://prerelease-registry.developers.workers.dev/runs/2022810901/npm-package-wrangler-670

You can reference the automatically updated head of this PR with:

npm install --save-dev https://prerelease-registry.developers.workers.dev/prs/670/npm-package-wrangler-670

Or you can use npx with this latest build directly:

npx https://prerelease-registry.developers.workers.dev/runs/2022810901/npm-package-wrangler-670 dev path/to/script.js

[threepointone]

Good catch!