fix(deps): update dependency mocha to ^8.4.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
mocha (source)	^8.3.0 -> ^8.4.0
@types/mocha	8.2.0 -> 8.2.3

Test plan: CI should pass with updated dependencies. No review required: this is an automated dependency update PR.

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Release Notes

mochajs/mocha

v8.4.0

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🎉 Enhancements

• #​4502: CLI file parsing errors now have error codes (@​evaline-ju)

🐛 Fixes

• #​4614: Watch: fix crash when reloading files (@​outsideris)

📖 Documentation

• #​4630: Add options.require to Mocha constructor for root hook plugins on parallel runs (@​juergba)
• #​4617: Dynamically generating tests with top-level await and ESM test files (@​juergba)
• #​4608: Update default file extensions (@​outsideris)

Also thanks to @​outsideris for various improvements on our GH actions workflows.

v8.3.2

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🐛 Fixes

• #​4599: Fix regression in require interface (@​alexander-fenster)

📖 Documentation

• #​4601: Add build to GH actions run (@​christian-bromann)
• #​4596: Filter active sponsors/backers (@​juergba)
• #​4225: Update config file examples (@​pkuczynski)

v8.3.1

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🐛 Fixes

• #​4577: Browser: fix EvalError caused by regenerator-runtime (@​snoack)
• #​4574: ESM: allow import from mocha in parallel mode (@​nicojs)

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