chore: update cleanup to run hourly

[blva]

Proposed changes

• I updated our clean up job to delete projects and clusters older than 2h, now updating the job to run more frequently

Checklist

• I have signed the MongoDB CLA

[Copilot]

Pull Request Overview

Updates the cleanup GitHub Action to run hourly instead of daily and reduces the default timeout for long-running integration tests.

• Cron schedule changed from daily to hourly.
• Long-running test wait timeout reduced from 1,200,000 ms (20 min) to 900,000 ms (15 min).

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
tests/integration/helpers.ts	Reduced long-running test timeout constant.
.github/workflows/cleanup-atlas-env.yml	Updated cron expression to run cleanup hourly.

[Copilot]

The raw value 900_000 is a magic number and reduces readability; consider expressing it as 15 * 60 * 1000 to make the intended duration (15 minutes) explicit.

Suggested change

	export const DEFAULT_LONG_RUNNING_TEST_WAIT_TIMEOUT_MS = 900_000;
	export const DEFAULT_LONG_RUNNING_TEST_WAIT_TIMEOUT_MS = 15 * 60 * 1000; // 15 minutes