chore(deps): update dependency eslint-plugin-unicorn to v9.1.1

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
eslint-plugin-unicorn	devDependencies	minor	9.0.0 -> 9.1.1

---

Release Notes

sindresorhus/eslint-plugin-unicorn

### [`v9.1.1`](https://togithub.com/sindresorhus/eslint-plugin-unicorn/releases/v9.1.1) [Compare Source](https://togithub.com/sindresorhus/eslint-plugin-unicorn/compare/v9.1.0...v9.1.1) - `prefer-node-append`: Only fix when expression is not used ([#​321](https://togithub.com/sindresorhus/eslint-plugin-unicorn/issues/321)) [`d62666d`](https://togithub.com/sindresorhus/eslint-plugin-unicorn/commit/d62666d) ### [`v9.1.0`](https://togithub.com/sindresorhus/eslint-plugin-unicorn/releases/v9.1.0) [Compare Source](https://togithub.com/sindresorhus/eslint-plugin-unicorn/compare/v9.0.0...v9.1.0) ##### Enhancements - Apply the `escape-case` rule to regex literals and remove transformation of `\c` escape on string literals ([#​294](https://togithub.com/sindresorhus/eslint-plugin-unicorn/issues/294)) [`79748e1`](https://togithub.com/sindresorhus/eslint-plugin-unicorn/commit/79748e1) - Add `BigInt` type to the `new-for-builtins` rule ([#​310](https://togithub.com/sindresorhus/eslint-plugin-unicorn/issues/310)) [`e17f0fd`](https://togithub.com/sindresorhus/eslint-plugin-unicorn/commit/e17f0fd) ##### Fixes - Do not warn if `.flat()` has more than one parameter or if the one parameter is not `1` ([#​317](https://togithub.com/sindresorhus/eslint-plugin-unicorn/issues/317)) [`6f10722`](https://togithub.com/sindresorhus/eslint-plugin-unicorn/commit/6f10722) - `custom-error-definition`: Cover exports name ([#​313](https://togithub.com/sindresorhus/eslint-plugin-unicorn/issues/313)) [`3f2e9a6`](https://togithub.com/sindresorhus/eslint-plugin-unicorn/commit/3f2e9a6) ##### Meta - Welcome [@​MrHen](https://togithub.com/MrHen) as a maintainer 🎉 [`770fe42`](https://togithub.com/sindresorhus/eslint-plugin-unicorn/commit/770fe42)

---

Renovate configuration

:date: Schedule: At any time (no schedule defined).

:vertical_traffic_light: Automerge: Disabled by config. Please merge this manually once you are satisfied.

:recycle: Rebasing: Whenever PR becomes conflicted, or if you modify the PR title to begin with "rebase!".

:no_bell: Ignore: Close this PR and you won't be reminded about this update again.

---

• [ ] If you want to rebase/retry this PR, check this box

---

This PR has been generated by Renovate Bot. View repository job log here.