chore(deps): update dependency query-string to v6.12.1

[ScriptedAlchemy]

This PR contains the following updates:

Package	Type	Update	Change
query-string	devDependencies	minor	6.11.1 -> 6.12.1

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Release Notes

sindresorhus/query-string

### [`v6.12.1`](https://togithub.com/sindresorhus/query-string/releases/v6.12.1) [Compare Source](https://togithub.com/sindresorhus/query-string/compare/v6.12.0...v6.12.1) - Fix value being decoded twice with `arrayFormat` option set to `separator` ([#​243](https://togithub.com/sindresorhus/query-string/issues/243)) [`3b4c295`](https://togithub.com/sindresorhus/query-string/commit/3b4c295) ### [`v6.12.0`](https://togithub.com/sindresorhus/query-string/releases/v6.12.0) [Compare Source](https://togithub.com/sindresorhus/query-string/compare/v6.11.1...v6.12.0) - Add [`skipEmptyString`](https://togithub.com/sindresorhus/query-string#skipemptystring) option ([#​252](https://togithub.com/sindresorhus/query-string/issues/252)) [`20233a6`](https://togithub.com/sindresorhus/query-string/commit/20233a6)

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