Update dependency helmet to v5

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
helmet (source)	^4.5.0 -> ^5.0.0

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Release Notes

helmetjs/helmet

### [`v5.0.2`](https://togithub.com/helmetjs/helmet/blob/HEAD/CHANGELOG.md#​502---2022-01-22) [Compare Source](https://togithub.com/helmetjs/helmet/compare/v5.0.1...v5.0.2) ##### Changed - Improve imports for CommonJS and ECMAScript modules. See [#​345](https://togithub.com/helmetjs/helmet/pull/345) - Fixed some documentation ### [`v5.0.1`](https://togithub.com/helmetjs/helmet/blob/HEAD/CHANGELOG.md#​501---2022-01-03) [Compare Source](https://togithub.com/helmetjs/helmet/compare/v5.0.0...v5.0.1) ##### Changed - Fixed some documentation ##### Removed - Removed some unused internal code ### [`v5.0.0`](https://togithub.com/helmetjs/helmet/blob/HEAD/CHANGELOG.md#​500---2022-01-02) [Compare Source](https://togithub.com/helmetjs/helmet/compare/v4.6.0...v5.0.0) ##### Added - ECMAScript module imports (i.e., `import helmet from "helmet"` and `import { frameguard } from "helmet"`). See [#​320](https://togithub.com/helmetjs/helmet/issues/320) ##### Changed - **Breaking:** `helmet.contentSecurityPolicy`: `useDefaults` option now defaults to `true` - **Breaking:** `helmet.contentSecurityPolicy`: `form-action` directive is now set to `'self'` by default - **Breaking:** `helmet.crossOriginEmbedderPolicy` is enabled by default - **Breaking:** `helmet.crossOriginOpenerPolicy` is enabled by default - **Breaking:** `helmet.crossOriginResourcePolicy` is enabled by default - **Breaking:** `helmet.originAgentCluster` is enabled by default - `helmet.frameguard`: add TypeScript editor autocomplete. See [#​322](https://togithub.com/helmetjs/helmet/pull/322) - Top-level `helmet()` function is slightly faster ##### Removed - **Breaking:** Drop support for Node 10 and 11. Node 12+ is now required

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