Update dependency helmet to v8

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
helmet (source)	^6.0.0 -> ^8.0.0

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Release Notes

helmetjs/helmet (helmet)

v8.0.0

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Changed

• Breaking: Strict-Transport-Security now has a max-age of 365 days, up from 180
• Breaking: Content-Security-Policy middleware now throws an error if a directive should have quotes but does not, such as self instead of 'self'. See #​454
• Breaking: Content-Security-Policy's getDefaultDirectives now returns a deep copy. This only affects users who were mutating the result
• Breaking: Strict-Transport-Security now throws an error when "includeSubDomains" option is misspelled. This was previously a warning

Removed

• Breaking: Drop support for Node 16 and 17. Node 18+ is now required

v7.2.0

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Changed

• Content-Security-Policy middleware now warns if a directive should have quotes but does not, such as self instead of 'self'. This will be an error in future versions. See #​454

v7.1.0

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Added

• helmet.crossOriginEmbedderPolicy now supports the unsafe-none directive. See #​477

v7.0.0

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Changed

• Breaking: Cross-Origin-Embedder-Policy middleware is now disabled by default. See #​411

Removed

• Breaking: Drop support for Node 14 and 15. Node 16+ is now required
• Breaking: Expect-CT is no longer part of Helmet. If you still need it, you can use the expect-ct package. See #​378

v6.2.0

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• Expose header names (e.g., strictTransportSecurity for the Strict-Transport-Security header, instead of hsts)
• Rework documentation

v6.1.5

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Fixed

• Fixed yet another issue with TypeScript exports. See #​420

v6.1.4

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Fixed

• Fix another issue with TypeScript default exports. See #​418

v6.1.3

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Fixed

• Fix issue with TypeScript default exports. See #​417

v6.1.2

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Fixed

• Retored main to package to help with some build tools

v6.1.1

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Fixed

• Fixed missing package metadata

v6.1.0

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Changed

• Improve support for various TypeScript setups, including "nodenext". See #​405

v6.0.1

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Fixed

• crossOriginEmbedderPolicy did not accept options at the top level. See #​390

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